he had access to the Firehose, which streams all the data, so his complaints about the other API ring false (which they removed the limits on anyways, according to elon -- but again, the API was a subset of the Firehose access he already had)

it seems more likely that he was upset that he had access to all of Twitter's data via the Firehose, but being impulsive and incompetent in the field of bot detection (having had zero experience), he has absolutely no way to produce a trustworthy report on bots which contradicts Twitter's report

so, he's just complaining about limits he used to have on an API he doesn't need to avoid producing a report he can't produce that requires expertise he doesn't have