You are correct that it would not instantly become unusable. But when all editors with integrity have ceased to contribute in frustration, wikipedia would eventually become stale, or very unreliable.

Also there is nothing stopping a person from using an llm to summarize an article for them. And the added benefit to that is that the energy and reasources used for that would be only used on the people that wanted to, not on evey single page view. I would assume the enegy consumption on that, would be significant.

Sony would be in the running. But i think nestle would beat them on the top spot.

This! Do they not have backups?

What is wrong with your system that requires disabeling updates?
Been running debian stable on a few hundred servers for 25 ish years.
And I always install and enable unattended upgrades. And it have never been a problem. Not even once.