@crazycells seems that Twitter have since relaxed the restriction, but not removed it entirely.
The verified accounts are now able to read 10,000 posts per day, with unverified accounts able to access 1,000.
Seeing as you have to pay for verified status by monthly subscription, it’s clearly a monetisation effort by Twitter. From my understanding, there are a number of entities that are scraping data from Twitter (and it appears Reddit is experiencing the same) - possibly language models that are being trained to enhance the capabilities of AI engines.
It’s blatantly obvious that this isn’t about them consuming content, but the fact that they aren’t paying. Twitter recently introduced a charge to use its API service that was historically free, and it looks like this is the next money spinner.