Artificial Stupidity.
9front is not UNIX (but its predecessor was also created at Bell Labs). It is ‘many of the ideas surrounding UNIX, on steroids’. The user experience is waaaaaay more integrated because the whole system is developed by the same small team.
On the flip side: forget about browsers and many ‘modern’ programming languages.




Everyday browsing (except watching videos online which is indeed very slow) is almost seamless on my 16-year-old Thinkpad running NetBSD, even with its meager 4GB RAM. NetBSD in general is pretty chill on system resources.
FreeBSD and DragonFly are not quite there, at least in my experience.
I haven’t used OpenBSD for browsing or watching videos in AGES (I only use it for non-graphical applications), so I wouldn’t know.