Pffft… A “clause” would do nothing! Absolutely nothing… What makes these celebrities vulnerable is their visibility. Basically, any time they’re at the mercy of a rolling [maybe live] camera they have no control over, it’s a battlefield for them.
First off, the “relationship arrangement agreement” can have a “no pregnancy clause” but who’s to stop them from “playing the media” when they bait and troll the media? These days, all you need to do is suggestively drape yourself around a celebrity (with that totally-knowing, smug look in your eyes) in a photo, and talk baity to get yourself noticed (imagine trying to prohibit or exclude that kind of behaviour in an agreement). Ask a man, “do you ever take anyone home to stay overnight?” (as Cousin Violet put it, “vulgarity is no substitute for wit”—but I suppose you really have no choice when you have nothing clever to say) and you’re set for lifelong ‘stardom’ because the mainstream media take the bait (and want the clicks), report/ask about it like crazy, et voilà: you’re permanently attached to a permanent A-lister’s name on Google search!
Seriously, second of all: A PR firm can have an “arrangement agreement/NDA” that stipulates, “no talking to the press [about the “relationshit” or any possible pregnancies]”, but the signing Party can work around that by baiting on social media by liking pregnancy-themed Instagram photos/tweets, posting suggestive memes… You can even have an air-tight contract that manages to explicitly ban that kind of behaviour, and she’ll still poof her dress/wear loose outfits (to lead people on into thinking she’s preg) while out in public when live cameras are rolling (or when you have zero control over what a media outlet’s editor will/won’t publish—because the whole “freedom of the press in a democracy” is sooo perfect like that). Even if the contract bans “calling the paps”, she’d still be able to troll the media into thinking she’s pregnant (even if she’s really not) when they’re at the mercy of like ~30 photographers on a live-streamed red carpet. There are a shittone of loopholes famehoes can use. And even if she were in breach of a contract, once the “news”/speculation of a pregnancy or relationshit is out there, it’s out there. And she may get a payment cut/have the deal terminated, but she still won the media game and got the limelight/attention/fame/notoriety she’s been so thirsty for.
Even working with high-end escorts (who presumably have experience staying “not pregnant” working with high-profile clientele in the past, and had a great track record of being discreet) can’t guarantee they’ll be predictable… The only thing that’s predictable about them is: Once they get a taste of that level spotlight, they’ll get addicted to it and do whatever it takes to cling to it…
Well, I wouldn’t go so far as to say they’re “necessary” (because I don’t believe you can ‘need’ them). If anything, I think the men who use them come off “desperately defensive”—like you know those people who are hiding something but end up waffling endlessly about their lies unprompted, and then it backfires and people end up figuring you’ve got something to hide? (Kind of like Trump when he started rambling about a “grand conspiracy” during the campaigns, and now we see all this stuff with Russia going on? Like that.)
As for for the beards: I can only tolerate them up until they decide to get greedy for the limelight… The greedy ones are absolutely despicable human beings.