It's even more funny if you know the backstory of bun. It was basically the perfect example of how to not to do things before they burned a whole forrest to have Claude slop it into another language, based on a codebase that was measurably bad. Now nobody actually knows the whole codebase anymore.
Given the phenomenal garbage that are the other big vibecoded projects (like the "compiler that can compile Linux" - it can't) using bun now is just like lottery.