AM4 _and_ prior. Motherboard quality has varied considerably across different manufacturers compared to Intel’s partners. One other example of recent annoyances is the launch situation with B450 and X570 and now with B550 and X570S existing years later basically. Gigabyte’s one manufacturer that has been swapping out parts to lower spec and they don’t get away with it in Intel’s partner network but somehow AMD isn’t penalizing Gigabyte at least publicly to keep this from happening.

For a long time AMD motherboards just had less features. Unsure if he means that specifically, but it was a pain point when I was building an AM4 system.