They should try to detect bots not using the API and ban them.
IMO all modern freedom of speech issues stem from not being able to differentiate between humans and bots. And it may be the case that it's not a solvable problem and we should assume any sentiment expressed online is always just noise.
https://blog.twitter.com/common-thread/en/topics/stories/202...
I have not seen many obvious bot accounts using it, even the “good” ones.