Did Twitter pricing reduce it's bot spam?
developer.twitter.com
developer.twitter.com
Even the 100$ tier has a 10 k. / Month read limit...
Is it possible that they reduced botspam because of pricing?
The limits are in place to force users into a twitter read experience where they can be monetized.
It has nothing to do with bots.
Propaganda bot spam replies to popular comments. Without read access it's not parsed easily.
Write is required for syncing eg. Legit content ( eg. When a new blog post is created) - this is useful bot content and not "spam", since it's picked up by the algorithm/followers.