If you're looking for a symbolic way to register disapproval of Google, an alternative is to install GrapheneOS.

Of course, Google would probably prefer that people go to GrapheneOS (where users currently are still a little at the mercy of Google) rather than to Apple (where that's an additional customer for the competition).

But you might find, as I did, that you also don't fully like how Apple treats customers.

So, GrapheneOS seemed to be the most practical compromise for me, right now.