Agreed. I've spent most of my career cleaning up other people's messes. Bitching about legacy software a) makes it clear that the prior practices are not accept

Agreed. I've spent most of my career cleaning up other people's messes. Bitching about legacy software a) makes it clear that the prior practices are not acceptable and can't continue (no tests, ignoring edge cases, ignoring users, all the standard stuff that makes up legacy code) b) helps keep you sane. The difference, which I hope the original author was alluding to, is that experienced dev accepts that legacy software is a part of life that has to be accepted, and dealt with, and that fixing it / keeping it on life support is frequently the right answer. Whereas junior's see it and run screaming or say there's no hope and it needs to be rewritten from scratch even though they don't really know the details of what "correct" behavior is.