That guy is everywhere! I see him on the History Channel all the time, most lately in some Einstein special, which gets the GR explanation of gravity all wrong. In the first place, it’s not “curved space” which explains gravity, but “curved space-time”. In particular, in the Newtonian approximation, which serves very well in most cases, this curvature is represented by an “off-diagonal” term between a flat space and linear time. So naturally, he’s wrong when he gestures with his hand and says that the “curved space” is pushing you into the earth. GR says that nothing is pushing you down! The earth is pushing you upwards in the free-fall frame of reference.
“I just can’t get anybody to believe in me.” - Charlie Brown