Afaiu, Bolt is a personal OSS project, github repo is archived with last commit 4 years ago, and the first thing you see in the readme is the "author no longer has time nor energy to continue".

Commercial cash cows like Roblox (a) shouldn't expect free labor and (b) should be wise enough to recognize tech debt or immaturity in their dependencies. Heck, even as a solo dev I review every direct dependency I take on, at least to a minimal level.

I can't speak to the incident response as I'm not an sre, but as a dev this screams of fragile "ship fast" culture, despite all the back patting in the post. I'm all for blameless postmortems, but a culture of rigor is a collective property worthy of attention and criticism.