I don't know about Galaxy Quest, but the early 2000s were big for the R-rated sex comedy, it's probably the defining genre for that time period in my mind. Wet Hot American Summer, Wedding Crashers, The 40 Year Old Virgin, Another Gay Movie, etc. Idk what exactly it was and I think a lot of the era aged pretty poorly tbh, but it was definitely the style of the time. You even kinda see it bleed into other genres of the era, like Freddie vs Jason is ostensibly a horror film but has a lot of shots that would not look out of place in a raunchy comedy.