This has nothing to do with the topic he talks about. In fact, since female demand is much lower, many actors who act in heterosexual films accept male clients in the private booking market precisely because the majority of the audience willing to pay is male. This turns private booking into a form of male prostitution where the economic dynamics — more than the actor's orientation or the type of films — are what define the clientele.
This point shows that, for many of these actors, serving men in private booking is a practical choice, based on the reality of the market and the willingness of male clients to pay for these interactions.
This would explain why they accept male fans and consumers as clients and not because of the gateway to gay sex/gay porn or specific choice to date or work with trans women.