Sometimes I feel like whining about someone else's crap code is enjoyable in itself.

Until you realize it's code you wrote. Happened to me when our children were little. There were large parts of a system I'd written, sleep deprived, that I had no recollection of writing. Version control said I did, but I didn't remember it.

That can make it even better, particularly if you can remember why you were making the decisions that you did.

Yes! It's actually great -- you can rant as hard as you want because you know the author won't be upset.

Oh but the author is upset, just with themselves

The property of finding their complaints hilarious would make me deeply question your technical judgment & maturity while also being certain you lack leadership skills. I’d also worry you would dismiss ideas of junior team members regarding how adopting new tools could better solve business problems, which is critical even in situations where you’re constrained by stability requirements of a legacy system.

parent comment could be interpreted many ways but heres my take.

there are many types of humour one can appreciate: https://www.huffingtonpost.com.au/2017/07/19/there-are-nine-...

If someone can't lighten up and find humour in life, i'd say they are mature enough to graduate life and go on to the next realm lol.