Cergorach
The Laughing One
That's because people have been trained to update-update-update. When a campaign in Foundry is running, you don't update if you do not need to. Is there a bug you really need fixed? Sure, update, but otherwise leave it alone!Foundry had updates that would break or move things around (partially I think because the GM used lots of add ones).
FG is a single developer. One thing to update, no conflicts. Foundry VTT is the core platform, 300+ game systems, and 3000+ modules, many of which aren't just content, but actual functionality. All made by different developers, many of which don't get paid for their work. So if you have a new version of Foundry VTT and/or your game system, you better make darned sure that all those installed modules work with the new version and with each other (because that can also be an issue) before you update anything.
The real problem with Foundry is not Foundry itself, but the people using it. If you got your <insert gaming system> fully automated with a bunch of third party modules and you install a new version of <insert gaming system>, you didn't do your due diligence when setting up your fully automated <insert gaming system>. This is not unique to Foundry btw, this is with all kinds of things, people don't think, they just do.
"Oh a new version of xyz!" clicks update button, that's me as well, don't get me wrong!

And to be honest, Foundry VTT shouldn't be the GMs responsibility. Get the tech person in the group to figure it out, configure, run, and update it. Many GMs aren't that tech savvy and when they get overwhelmed by all the cool modules they start installing and activating them like crazy...