Well, not celebrities but TV shows and game shows where they appear.
Edit: I’m sorry to any Brits that feel offended. It’s not a criticism of British dental care. I think you are maybe taking a shower thought a bit too serious. Also I’m not American but Scandinavian design though my teeth must be empire.
TBH, this makes very little sense to me, because that stereotype hasn’t been true for decades. I was once a braces kid (in a country where that was very normal) and have been living in the UK for 10 years. No significant differences in the state of people’s teeth.
Either the people you were watching are very old (born pre WW2) or an especially unlucky bunch. 😆
You know the people doing the game show circuit? Check out the middle aged people, men in particular. Plenty of wonky teefies. Dunno if I’d call them unlucky.