No, because many apps refuse to run on third-party distros due to misguided notions of them being insecure. It's easy to say "just don't use those apps" but in reality, people are rightly unwilling to put up with any friction and so will simply continue to use Google's version of the OS.

Many banking apps work as long as you relock the bootloader. E.g. on GrapheneOS:

https://privsec.dev/posts/android/banking-applications-compa...