Have you heard of Twitter? 80-90% reduction in numbers, visible effects to the user (resulting from the headcount cuts, not the politics of the owner)? Pretty much zero.
That’s a difficult example. I don’t think anyone would reasonably expect the engineering artifact twitter.com to break. But the business artifact did break. At least to a reasonable degree. The Ad revenue is still down (both business news and the ads I’m experiencing are from less well resourced brands). And yes, that has to do with “answering emails with poop emojis” and “laying off content checkers”