I'd caution trusting any person's engagement on social media, especially in this line of work. It's very much a "fake it until you make it" industry. Men want followers and engagement to convince women they're big shots worthy of working with. The women want followers and engagement to create FOMO amongst potential subscribers. For those in mainstream porn, a bigger follower count suggests greater demand for sites to book them (sometimes at higher rates).
I say this because it's not difficult to find straight men whose content isn't particularly great with hundreds of thousands of followers more than Danny D, Jmac, etc. Some no-name guy shooting trash on his phone is more popular than some of the most prolific pornstars of the last 15 years? Even worse, many of those random guys have substantially more followers than even the famous female porn stars they shoot with. Does that sound logical for straight porn? There was one male Onlyfans creator who admitted to not just faking engagement on social media, but going so far as to buy likes on Onlyfans. That was done to suggest content with him was more popular than it was. The Onlyfans or Fansly engagement is something a lot of fakers neglect, so that can be an easy tell. You've got 500k+ followers on Twitter, but 4000 likes on Onlyfans after a few hundred posts? Either your audience consists almost exclusively of brokies or that doesn't make sense.
That isn't to say I think Girthmasterr is faking his numbers. It's just to say those numbers aren't always accurate. Fake boobs, fake ass, fake hair, fake nails, fake eye color, fake skin tone, fake lips, "fake" dicks. People lie all the time in this line of work.