We will most likely never see a nude from him. He’s a married straight man with a brand image to uphold and a business to run. He’s not a sex worker, but knows he’s sexy.
the brand image brought him thousands of followers, and maybe $10,000/year for some business engagement like sponsorship deals or free stuff exchanging for pitching, or he could make $100,000 for becoming a content provider on onlyfans. In either scenario, it won't last long, for an fitness influencer 3~5 years maybe, onlyfans? a year at most or just a few months.
It's a decision for people like him to decide, some figure out they can make more money to strip a few weeks on onlyfans than posting on IG for years, so they went for it. Of course there are people who won't do that no matter how much money they could make. But also there are some, who worry about their image or dignity, it's a concern to them but it's not a deal breaker, the only reason they are not on onlyfans is they don't understand the math behind it.