Why do Linux nerds that care about this sort of stuff hate snaps so much?

Is it the concept of snaps / flatpaks that is the issue or snaps specifically because Canonical is behind them?

I know literally nothing about how they work except I installed the VLC snap and it's fine.

I couldn't install Parsec (a remote desktop game streaming app) because of a missing dependency (an old version of lib-something codec that wasn't in my newer version of Ubuntu). I spent like an hour trying to figure out how to take the 18.04 version and add it to 22.10. I don't know Linux at all so I wasn't making much progress. Someone, not the developers of Parsec, made a flatpak and it magically worked.

I was afraid that because the flatpak was made by some random guy I couldn't really trust it. I looked inside the flatpak and it's seems to be nothing except for the Parsec deb coming straight from the official Parsec URL and that libcodec thing that was causing a problem.

So from my perspective, not knowing the technical details or politics, what's the problem?

Ubuntu and Snaps are the cancer of the Linux world. :)

That's why I left for MX Linux.