Right now, snap (2016-present). Before that, Unity instead of GNOME (2011-2017), Mir instead of Wayland (2006-2015), Upstart instead of systemd (2013-2017).
They always do something custom-made and not adopted by anyone else, only to completely backpedal and go with what everyone else has already been doing. So, even if you like their custom-made solution you'll eventually end up being disappointed. After that, it becomes like a relic that only some frustrated sysadmins like me will have to deal with whenever we interact with some legacy systems, which definitely doesn't help with Ubuntu's overall reputation.
IQ is mostly BS. And even if it's not, it only measures the ability to learn, not the actual skills. What I wrote remains true: just because you have skills in one area (AI deciphering of hieroglyphics scroll), doesn't mean in any way whatsoever that you have skills for something entirely unrelated (administrative matters).
Everyone is aware of that. No one thinks Facebook or Mark are some saint entities. But while the spider is doing some good deeds why not just go "yeah! go spider!". Once it becomes an asshole, we will kill it. People are not dumb.
I'm not particularly concerned about the user limit. The companies for which those limits will matter are so large that they should consider contributing back to humanity by developing their own SOTA foundation models.
Stanley Parable / Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist are two (from the same devs) that stand out in recent memory. Myst (and Riven and there are like six total ending with a fully 3d Obduction) are cult classics and already referenced.
These are all sci-fi walking sims, which is the genre of "wander around a strange place trying to figure out what happened and/or how to get out". Some walking sims have more of a traditional narrative and some have less, some are short (under an hour) and others are longer, some are comedic and some are more serious. There are lots and lots that aren't sci-fi too.
Probably the most accessible here is Tacoma, but it can get pretty rough on Intel graphics. If you want a free one you could try Electric Highways or Off-Peak, or if you don't care that they're not sci-fi you could try Gravity Bone, A Bewitching Revolution or Dr. Langeskov (suggested in a sibling comment).
