Yeah, I definitely do think there's a difference in the perception of Paul Johnson between those who have had their kids play for him for 4+ years, and those whose perception of him largely stems from how they see him in the media (and on the field sometimes, but this is less of a concern personally).
Regardless, I think you're missing my point. My point is not whether or not he acts differently with recruits and his players. My point is when you're a parent of a recruit and you have a limited sample size/interaction with him, you go off what you see. I don't think that's a stretch at all. If he gets a chance to actually visit someone's home then he already (literally) has his foot in the door. But what about those parents who cross GT off their list right away because he comes across as a jerk sometimes? I have had multiple successful GT players who played for him for their whole career tell me he's an a-hole. Granted, that could be kids this generation not knowing how to handle tough love/old-school style. Regardless, that's as close to seeing something to suggest otherwise as I can give you. Obviously no parent is going to come out and volunteer a negative opinion on him, especially if their kid isn't going here. Again, this doesn't mean he's a bad guy or not a good coach. It's obvious to me he's a good guy AND a good football coach. But in my opinion, if you think CPJ is doing all he can to help how he (and therefore the program) is perceived, you aren't seeing the reality.
If parents of recruits saw Dabo Swinney go off on his punter in the ACC championship game -- it was, in Blazing Saddles lingo, a doozie -- would they allow their boy to go to Clemson as a result of a sideline flareup? (I know I am being kind, because it was a a world class rant.)
Yet from what I have been told of Swinney from one close to him, once he walked away that second time, it was a done deal, over and done with, and he'd never bring it up again nor hold it against the player. And sure enough the kid was trusted to punt two or three times more afterwards.
Or might doubters recall those wild "dance" celebrations in the locker room after every win, with Swinney in the middle, and his players saying they love to play for him; his pizza night for 30,000 fans after 13-0, and then wait until Swinney came into their house before deciding? Because dollars to donuts if he gets his feet under the dining room table that boy is Clemson bound, and that rant goes to the rear view mirror. Johnson is not so demonstrative for sure, but I don't recall reading about any parent crossing Tech off because of him. The point being, if there is one, is that there are many mitigating factors with parents and players, and face time most often is the determinant. Not to mention of course, the recruits meet a lot of players before committing, and truth always outs.