While someone does have to be the first to experiment I think you've implied a bit of a false dichotomy here. Experimentation can be good for sure, but it also doesn't have to involve such extremes. Sucks for the people left who now have to make up for the fact that someone's experiment didn't work out so well.
I think that as an employee it’s good to have a clear failure case study to point to from a large and credible organisation that this idea your boss has to fire everyone and just LLM everything isn’t going to work the way you expect it to.
The more examples of this going badly we can get together the better.