I think he was saying he wasn't referring to any and everyone in the NBA, just Ryan Hollins. I'm not saying I agree with him, just clarifying that bit of miscommunication.
All that said, I do not think all NBA players are unbeatable all the time against all non-NBA players. I think most people would agree with that point. However, to have a real chance at defeating an NBA player without relying on having the best shooting day of one's life on the same day the NBA opponent plays the worst ball of his life (and worst day of his life, with a broken ankle), the non-NBA guy will probably need to have some real-deal serious skill alongside a real-deal serious body. So in truth, if there's a 6'6'' prep star with NBA potential in Philadelphia, I reckon he
could defeat an NBA guy in 1-on-1 some time. That wouldn't mean the prep was more fit for the NBA than his NBA opponent of course, nor would it mean he's a better 1-on-1 player. It's just, 1-on-1 can have surprising results sometimes when players are at least in the same super loose region of ability and skill, as I feel an NBA prospect prep star may be.
Similarly, I've defeated my little brother in 1-on-1 for as long as he's been alive. For a while, it was no contest. We were on different planets. But as he grew into his sophomore year of high school and beyond, I still felt I was far superior, but his skills had at least entered the same general area code of mine. That meant, he still took countless beatings, but one day he did actually beat me, despite being far below my level (but not on another planet). Logic wise, my brother at that age should have never beaten me. But weird things happened that day. Point being, sometimes, even when the gap is large, fluke outcomes can happen, particularly if a player is only a few notches below a challenger (NBA prospect vs. NBA player) as opposed to NBA player vs. normal ball playing folk.
Most of us though, just based on probability, I'd say we're comfortably on another planet from NBA guys, if not another solar system.