Alright; the comics are actually worse than 3.
The happy ending from Aliens was ruined as hard if not worse than 3 if you REALLY think about it. Newt gets sent to the psych ward for years and drugged so badly her brain nearly broke. Hicks neglects and actually hurls abuse at her several times due to his own trauma. And Ripley fucks off for about 15 or so years.
This ignores the new trauma they had to deal with too, with Newt realizing and rejecting love with a robot whom she leaves to die. Oh, and also Earth is basically dead, and the Space Jockeys do climate change.
TBH Alien3 was kinder to those three than the comics, since at least they died in their own dreams or due to triumph.