@itsfoss many reasons to hate Ubuntu, hope the list fits in a tooth:
Centralized proprietary Snap ecosystem forced on users
replaced gnu utils with Rust
Amazon ads, sent search queries to Amazon (2012ish)
their license gives extra rights over contributions
Building Unity vs collaborating with GNOME
Creating Mir instead of using Wayland
Forcing Snap versions of apps like Firefox
Killing projects like Ubuntu Touch and Unity after pushing them heavily
Telemetry added in Ubuntu 18.04