First off, that dude is an idiot who posts a lot of nonsense... he did not poll his buddies that are HS, CFO, and NFL officials, and they most definitely did not unanimously agree this was an incomplete pass, there is no bobble whatsoever that I can see.
That said, with the hindsight of IR/multiple camera angles/slow motion, I have this as a catch, with his foot down inbounds... but I'm fine with the call on the field as well.