Android API 30 required?

Publishing apps is still fairly mysterious to me, and I was hoping someone could confirm that I am not misunderstanding this notification. All of the android devices I have access to will not update past android 10. Prior to this notice, our Unity apps worked flawlessly. Now it is stating our devices are incompatible.
I just want to double check this. Our current Android 10 devices may no longer run our app (or, really any new or updated Google Play app, for that matter)?

I'd hate to have to buy a new device because I didn't understand the specifics, but it looks like it's probably going to be the case.

Thanks for any help!