The Pixel 7 is the first to drop 32-bit support. For what it's worth, Apple dropped 32-bit support about five years ago.

Not necessarily, no. 32-bit applications are going to be making calls to 32-bit libraries and referencing a 32-bit address space. If those libraries are missing and/or there's no virtualization layer to translate the 32-bit calls, then the 32-bit apps won't work.

I am not sure but I think they patched 32bit support out