I don't think their Linux support is bad, but it's not Linux first. If Windows users had to run a command to fix a display bug it would have been held back until it was fixed. With something like System76 you get a laptop with Linux preinstalled that just works, no commands necessary.
Keep in mind I called them Linux-conscious / Linux-second. They still focus on making it a fantastic machine for Linux users, but I think it's a little less than some other shops provide for Linux.