IMHO:
1. AV studs are not normal people, they need to get hard on demand, ejaculate on demand, most men cannot do that, not easily.
1a. any guy (except perhaps the absolute top 1% of 1% of male stars) who needs fluffing would be given the job of tissue-boy wiping semen (or even fluffing) rather than the job of studs.
2. they might have some regiments and/or diet and/or drugs that helps them do whatever that seems to be impressive. Whatever they do or can do, doesn't mean average civilians can or should try to copy. For example, taking a lot of Viagra, maybe meth (just pulling it out of my ass, I have no idea if meth could help with getting hard and/or more semen). I would not do that to my body.
3. ejaculating twice within a few hours is no big deal for any healthy male. Three times is uncommon. I have done 4 times (with 10 hours) twice in my life. Totally awesome. But I have never pushed myself for a few days in a row. Like... I have never done more than 4 times in 48 hours. A regular pro stud, I guess have to do at least 15 times per week, maybe 20, 25 times in a week? And more scary, probably more than twice a day on average all year long. If somehow I had sex 5 times within 2 days, I think even the idea of a woman would make me want to die.
Anyway those of you asking, I think you don't understand sex workers (male) nor do you know your own body and women. Why would you need so many cum shots in a day? One reason might be premature ejaculation? You lose your load even before her panty is off? And than can't seal the deal?