That's just regurgitating the same Puritannical bullshit that's been infecting American society for the past hundred years or so.

Humans curse sometimes. That's what happens to real people in the real world. Astronauts are not some kind of pure, unspoiled demigods. They're regular-ass humans who say things like shit and fuck. Just like approximately everyone else does.

I'd rather the best and brightest among us admit that they're real people just like everyone else than put on a show to protect the delicate sensibilities of a very small number of people who clutch pearls and scream when someone nearby says a "bad word".

Astronauts are people. They have genitals, they walk around nude sometimes. They shit, piss, and fuck just like you and me. You want to deify and make them into false idols for some reason. That is a fundamentally bad and wrong thing to do, and you can directly quote many/most religions on that one.