Kinematics
Hero
I did not find his statement at all unclear, but if you want to complain about a lack of nuance, the reason is pretty obvious: Twitter.That's probably what he was trying to say. I don't think he got it quite right.
The inability to express complex thoughts on Twitter has been a problem since it began. It might be slightly less of a problem with the new character limit, but I expect it will still be a while before any real changes manifest.
I'd say to stop using the mechanical problem as an excuse to blame the speaker, but I feel the same about Jeremy Crawford's rule-clarification tweets, so am hardly in a position to cast stones.