Are you kidding? I've had config files overwritten, x11/wayland/whatever just break after an update, wirelesss/power drivers just...change, sometimes to the point of having to recover it from a mono-screen tty, or updates fuck up the fs or something else that requires me to hit up single user mode.
Yeah, I got a black screen on boot on more than one occasion because of some change to either X11 or its config after updating. It's probably a rite of passage for a seasoned Linux user to figure out how to undo the damage to their `/etc/x11/xorg.conf`. (then again, I stopped using linux about 4 years ago, so maybe that's changed)
The Linux 5.4 (LTS!) and 5.5 releases had consistent hangs on many Intel GPUs that use the i915 driver. I had to revert back to 4.19.x on my Linux machine.
Last time I tried to update a Linux install I was trying to go from Ubuntu 16.04 to 18.04, LTS to LTS. It crashed during the update and corrupted the initial install, throwing me back to grub to try to undo the damage.