Part of me can't help but feel like Matt's opinion (from what I understand) is coming from a place of frustration due to his enjoyment of how 4e was, and how much WotC has moved away from all the things that came with that edition, game and production wise. Grant it, I'm not too well verse in his work but from what little I've seen of what he has said in the past year, I can't help but feel like he WANTS this opinion to be true and that WotC's decisions about 5e were bad to justify his feeling of 4e being better.
Please note that I'm only going off of what little I know about him and what he and other have said about him and his opinions. This is just my thoughts from that limited knowledge.