If your keyboard sends everything you type to the state, and there are no usable alternative keyboards, what realistic actions can you take?
a) type nothing anywhere on your phone: send only emojis, 'gifs', and voice notes?
b) learn to read and write a language with keyboards that don't phone home; or transcribe your written language to an alphabet with a keyboard that doesn't phone home
c) buy an expensive phone with an OS supplied keyboard that doesn't phone home (assuming such phones exist?)
d) learn Android development and input method theory and build a new keyboard for yourself
Are any of these actions actually feasible for the general population?