Android shader not accepting fallback?

Maybe this is just a lack of experience with shaders talking, but I've been dealing with major issues revolving around certain processors crashing with alpha shaders (in this day and age??) and I finally managed to work through it and find some that are decent replacements. Now that I've found the ideal shaders for PC and Android, I figured I could just apply the PC shaders and let the fallback do its thing for Android.

Well apparently that doesn't work. And despite trying to combine the subshders of the fallback shaders into the main one so it could skip to something that worked, it STILL just flat-out crashes. It may be possible to reset all the alpha materials to the proper versions manually depending on what I'm exporting to but that is not a fate I want to subject myself to.

Here's the Android shader, which has been tested and found to work just fine despite the editor complaining about ShaderWithClipAndroid:

 Shader "WV/Mobile Alphaclip"
 {
     Properties
     {
         _MainTex ("Base (RGB), Alpha (A)", 2D) = "white" {}
     }
 
     SubShader
     {
         LOD 200
 
         Tags
         {
             "Queue" = "Transparent"
             "IgnoreProjector" = "True"
             "RenderType" = "Transparent"
         }
 
         Pass
         {
             //Cull Off
             Lighting Off
             ZWrite Off
             Offset -1, -1
             Fog { Mode Off }
             ColorMask RGB
             Blend SrcAlpha OneMinusSrcAlpha
 
             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
             #pragma fragmentoption ARB_precision_hint_fastest
 
             #include "UnityCG.cginc"
 
             sampler2D _MainTex;
             float4 _MainTex_ST;
 
             struct appdata_t
             {
                 float4 vertex : POSITION;
                 fixed4 color : COLOR;
                 float2 texcoord : TEXCOORD0;
             };
 
             struct v2f
             {
                 float4 vertex : POSITION;
                 fixed4 color : COLOR;
                 float2 texcoord : TEXCOORD0;
                 float2 worldPos : TEXCOORD1;
             };
 
             v2f vert (appdata_t v)
             {
                 v2f o;
                 o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
                 o.color = v.color;
                 o.texcoord = v.texcoord;
                 o.worldPos = TRANSFORM_TEX(v.vertex.xy, _MainTex);
                 return o;
             }
 
             fixed4 frag (v2f IN) : COLOR
             {
                 // Sample the texture
                 fixed4 col = tex2D(_MainTex, IN.texcoord) * IN.color;
 
                 float2 factor = abs(IN.worldPos);
                 float val = 1.0 - max(factor.x, factor.y);
 
                 // Option 1: 'if' statement
                 if (val < 0.0) col.a = 0.0;
 
                 // Option 2: no 'if' statement -- may be faster on some devices
                 //col.a *= ceil(clamp(val, 0.0, 1.0));
 
                 return col;
             }
             ENDCG
         }
     }
 
     SubShader
     {
         Tags
         {
             "Queue" = "Transparent"
             "IgnoreProjector" = "True"
             "RenderType" = "Transparent"
         }
 
         LOD 100
         Cull Off
         Lighting Off
         ZWrite Off
         Fog { Mode Off }
         ColorMask RGB
         AlphaTest Greater .01
         Blend SrcAlpha OneMinusSrcAlpha
 
         Pass
         {
             ColorMaterial AmbientAndDiffuse
 
             SetTexture [_MainTex]
             {
                 Combine Texture * Primary
             }
         }
     }
 }

And here's the shader that I use on PC, but crashes on Android:

 Shader "WV/AlphaClip" 
 {
     Properties 
     {
         _MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
         _Color ("Main Color", Color) = (1,1,1,1)
         _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
     }
 
     
     SubShader 
     {
         Tags {"Queue"="AlphaTest" "IgnoreProjector"="True" "RenderType"="TransparentCutout"}
         LOD 100
 
         Pass 
         {
              Material 
             {
                 Diffuse [_Color]
             }
             Cull Off
             Lighting Off
             Alphatest Greater [_Cutoff]
             SetTexture [_MainTex] 
             { 
                 constantColor [_Color]
                 combine texture * constant
             } 
         }
     }
     Fallback "WV/Mobile Alphaclip"
 }

Whether or not I put the fallback there, it always just crashes on my Android device. If I put the subshaders from the one that does work into there, it STILL crashes. I really just want this stupid thing to use the working shader on Android and the better shader on PC automatically. Am I just doing something wrong?