An extremely low ship x86 support but a huge number support it already for internal uses. The emulator, for both local and CI, and any host-side tests are all x86. These are extremely common to have for everyone. Big companies love having CI, and small ones love the emulator to avoid needing a ~dozen dev phones for the different API levels and form factors.

But importantly since ARM and RISC-V have the same memory model, unlike x86, then it really is just going to be an extra compilation target for any native libraries and that's about it.