Switching to Ubuntu is way, way better than staying on Windows.

That being said, Ubuntu is maintained by the Canonical company, and they have made some really sus decisions in the past. Things like putting Amazon ads in the application launcher and then trying to gaslight people when the inevitable backlash arrived.

The meme above refers to Canonical's own Snap packaging format (think of it like UWP/Microsoft Store apps vs. "regular" Win32 apps), and the way they're pushing for its adoption. Snap is installed by default on Ubuntu and official Ubuntu flavors. You can uninstall it manually, but Canonical has modified the APT package manager so that when an application is available as a Snap package, it automatically installs the Snap back-end and the application as a Snap package without notifying the user (instead of installing the .deb-packaged applications, which is what happens on all other distributions that use APT). Canonical recently also ordered that official Ubuntu flavors (which are maintained by independent groups) can't include Flatpak, a universal packaging format that directly competes with Snap, in their default installations.