Honest opinion, it ain’t about whether or not profanity is legal and to what extent. It’s about the fact that probably there’s three rom hackers in the world that can use it well without it growing stale or giving second-hand embarrassment and they chose not to do so.
Profanity while keeping a serious tone is a very difficult task, and one that tries at that is probably going to take a long time at perfecting the skill of not making it look bad.
And even then, if you simply spam it around, it’ll lose its value. Profanity itself is a means of grounding a character down - humanizing it, rather. Would you expect the ruler king, the 27th dragon god, or so on to suddenly say “fuck”?
No, right? That’s what gives value to profanity.
If you name your hack “Fuck Damnblem, Shitting Blade”, and half of the dialogue is the word ‘Fuck’, then, well, suit yourself.