I see people hate snap packaging and removing it if their OS support it.
Is it because it's NOT fully open-source or just due to how the technology works?
Here’s my answer to this same question from an old thread on Reddit:
My Ubuntu system always reserved a whopping 20% of my 32GB ram for no reason and I never bothered to know why. Later I uninstalled snapd because of boot time issues and guess what happened? Only 1.5 GB used after a fresh boot.
I had like 4 different JetBrains IDEs installed via snap with each totalling around 2GB of disk space. While removing snapd I discovered it kept back 2-3 previous versions of every package on your disk.
Uninstalling this bloat was the best thing I did to my ubuntu system. It was suddenly light as a feather and way more responsive like I just did a fresh system install.
Some time later I was installing something from apt and Ubuntu tried to install it from snap, thus sneakily installing snapd in the process. Looking for a solution, I felt like I was looking up how to disable Windows updates or some other shit.
I had a moment of clarity and wondered why the fuck did I have to put up with this kinda bullshit on Linux. I wiped that drive clean and switched to Fedora.
I might need to switch over as well, but I really don't like rpm (or whatever that's called on fedora, zypper or something? or was that suse?). I've been a Debian user since woody was a new thing and then at some point I gradually moved to ubuntu due to better desktop experience and more up to date packages (back then Debian stable really wasn't anywhere close of bleeding edge) and PPA support was great for my needs. Now I have ubuntu installations which have gone trough upgrades for years and installations I have doesn't seem to work like I want them to. Some of the issues will most likely stay (as RMS said, nvidia rapes babies or something like that) but in general I don't like my browser, signal client and whatnot to notify me that I need to shut them down NOW since they'll upgrade at some point in next 3-6 months. Simple apt dist-upgrade isn't enough anymore and the systems require more and more TLC than I'm willing to give to them. Snapd is at least related to the issues I have 8 times out of 10.
Ubuntu just doesn't have the feel it used to and it's getting annoying enough that the simpler way would be just to reinstall everything and switch to something else, even if it takes some time and effort to migrate 5+ year old installations to new system.
Maybe LM:DE (Linux Mint: Debian Edition)? Obscure software can be a pain to install for the usual reason, but otherwise I'm finding this to be a great distro. Second choice is Solus, but that's even worse when it comes to software.
Fedora uses DNF, with rpms under the hood, not sure how that works, haha. Honestly I have no problems with it. I'm no power user, but it does everything I need. The only downside being kinda slow repo fetches.
One of my biggest gripes about Windows was updates, virus scans and compatibility scans running autonomously while I am trying to get stuff done, sucking up network, drive access and CPU. I didn't need Ubuntu doing the same thing to me - I want to kick off updates manually when I am taking a break for lunch or at the end of the day before shutdown.
I actually think jetbrains are the ones keeping old versions. On my windows machine, when I get an ide update, the old one is saved so I can revert back to it.