This is unfortunately the case, which is why I start the essay with caveat that it hopefully applies to people with my cultural background who swear, and may not apply beyond that.
Obviously I hope you can tell that's thick sarcasm to illustrate a point.
Viewing swearing as "dumb" and thus people who swear are "dumb" is a really easy way to openly okay associating a whole group of people that may swear often as "dumb" or to selectively apply that standard to them.
You yourself are perfectly free to choose whatever words you would like to use; I am perfectly free to find language policing and censoring repugnant.