Sure, but also Pym is dumbing down his explanations for Scott, because he thinks Scott is a moron. The exact functioning of Pym particles isn’t at all clear.

It would be like if Superman could tear his S emblem off his chest and throw it at bad guys like a giant cellophane net. Or if Superman could fly fast enough to spin the Earth backwards and reverse time.

Or like if Hulk could be stopped by some crazy loud directional speakers.

Super powers and weaknesses are, and always have been, entirely plot dependent. Vision can phase because he can phase. The explanation that Vision can control his own density makes zero sense. That could make him float, but it wouldn’t make him fly sideways, and it certainly wouldn’t allow him to pass through solid matter. Air is not very dense, but it doesn’t pass through solid stone. The physics of Starlord and Gamora in space make no sense. Groot makes no sense. Yondu’s arrow makes no sense.

Ant-Man can shrink and punch a dude because he can shrink and punch a dude. The only problem is they tried to explain it like it’s science.