Devs here and elsewhere desperately wanted Twitter to fail because if Elon showed it was possible to just fire half your employees and actually end up with a better product then the jobs of most people here would be at risk. Now other leaders might think like Elon and end up firing devs en masse as cost cutting in hard times. The truth is there is a lot of bloat in FAANG scale companies. If tomorrow google fired 50% of it's army of tens of thousands of engineers, it wouldn't hurt at all. Might even end up helping given they created way better products when there were less engineers than at present.