Why do you say there is a lack of moderation? https://blog.twitter.com/en_us/topics/company/2023/maintaini...
Also obvious scams are still rampant. Say you have a problem with a crypto wallet and you'll get lots of bots offering "help". Not solved for many years.
And yeah, as the sibling comment mentions, those are arbitrary chosen numbers from the company itself. Do you expect them to publicly advertise they're doing badly in some way?
That moderation team must have been horrible.