I am trying to figure out why some devices like mine (Pixel 4a, Android 11 ) don't have a TWRP. It seems to be a fairly popular device, so I am presuming lack of developer support isn't a reason.
Some pointers I could find :
Lack of space on the RAM disk? Thread TWRP on the P4a?
Thanks to alecxs who pointed out Test build for Android 10, which again speculates on reasons (surprisingly, no one confirmed it fully works on Android 10).
Kernel support needed? This kernel claims to support TWRP
So, I am just trying to understand from a user point of view what the limitations are ( I do miss nandroid backup, at times).
Reasons, anyone?