It's fair criticism, but it does sort of highlight that we're being sold "8-phase" boards that are usually just 4. Truthfully, 4 is enough for a stable stock system, else we'd have a world full of people who can't get the things running properly, but I appreciate someone taking the time to do a teardown and call the manufacturers out on a lie. I also like that it highlights the premium boards for people who want to make the investment and have a board that will seat Ryzen 3 with no questions asked
The budget board he was kindest about was the MSI Carbon X470, I think. IIRC it's 4 phases but they are heavyweight and can handle a lot of amps.
You can also check out this reddit thread, which broke down a lot of X370 and B350 boards and worked out what VRMs they're using. It's pretty likely that the X470 refreshes are at least as good as these:
https://www.reddit.com/r/Amd/comments/630gc9/am4_motherboard_tier_list_updated_40217/ (Note I don't think they're differentiating between doubled phases that are out of step, and doubled phases that are in-step and thus not really additional phases.)