I'm not blaming the tech. I like Python3 and start new projects in it when I can. Yes, our code base is a giant fucking disaster. I wouldn't even begin to try

I'm not blaming the tech. I like Python3 and start new projects in it when I can. Yes, our code base is a giant fucking disaster. I wouldn't even begin to try to deny that. I'm also pretty certain that there are others in the same boat to a greater or lesser degree. I've seen too many codebases that were the product of starting with a team of one or two and a mandate to move quickly. It's impressively easy to dig yourself into this sort of hole, and it's impressively common among startups in my experience. I'd imagine that large enterprises are even more likely to have even larger legacy codebases without full test coverage. They may have more resources to throw at the problem but are also likely to have more political obstacles and even higher standards for verification that they haven't introduced new bugs. But the GP was insisting that there's no reason not to have upgraded yet other than sheer stubbornness and unwillingness to learn new things, or even laziness on the part of the engineers. That's incorrect and insulting.