I’m decently sure profanity became known as such because of either religious reasons or class division (along the lines of peasants vs nobles from early/medieval europe) and it just became commonplace.
I would say profanity nowadays though is a lot less taboo. It’s been normalized in culture (hip hop, city culture, punk subculture) and a lot of people are less religious nowadays.
Seems to math to me? 2002 to 2008 is 6 years, 2008 to 2020 is 12 years, 2020 to 2025 is 5 years