Yup, most moves without hitboxes are like that iirc. I know dee jay's 22pp even got changed at one point so you couldn't cancel fireballs into it to remove the pc from recovery (it is pc when cancelled from fireballs now).
Yeah, I guess a better way to word it would be "moves that don't hit players are most often counterhitable in their recovery". I think there's exceptions in both directions though, so it isn't a hard rule or anything.