Yeah, but that was said in a movie where they could potentially have sweared as much as they wanted to. Or at least acknowledged that ‘dumbass’ wouldn’t be some shocking thing to a guy from the future.
Yeah, it’s like the transporters. They were originally made due to the limitations of making a TV show (budget didn’t allow a landing sequence every episode) but they’ve become an established part of the universe now.
Most trek shows were on primetime network television. Once they went to streaming, the swearing came back. 
Although, even during the primetime network era, we got plenty of alien swearwords, mostly in Klingon. One or two in Romulan.
Yeah, but that was said in a movie where they could potentially have sweared as much as they wanted to. Or at least acknowledged that ‘dumbass’ wouldn’t be some shocking thing to a guy from the future.
True, however, we did get Data blurting out, “Oh, shit!” when Troi crashed the Enterprise saucer section into Veridian III in Star Trek: Generations.
Yeah, it’s like the transporters. They were originally made due to the limitations of making a TV show (budget didn’t allow a landing sequence every episode) but they’ve become an established part of the universe now.