A key skill for a punt returner is the ability to change directions quickly, i.e. 'wiggle'. If you think that every skill position player on our roster and every skill guy we will sign are ALL better in that regard than Devrin Young, then you're simply not equipped to evaluate it or are purposefully being contrary for some reason.
I don't know whether he'll wind up successful or not and don't know whether he'll be a good punt returner. But I've seen enough film to know that he's got some wiggle that is unusual and he is certainly better in that regard than some of the skill players that we have. Da'Rick Rogers is a great athlete, but is 215 and doesn't have that explosive change of direction, for example. That's why he's a kick returner insted.
The coaching staff clearly thinks that Young has potential, too.
To challenge your assertion, I'll ask this. DY has returned numerous punts for touchdowns in high school and it is a certainty that many of our skill position people never returned a punt at all, let alone for a touchdown. Now, you may think that a guy who's never caught a punt is just as likely to be a good punt returner as a guy who has returned punts for touchdowns, and that's your prerogative. But it's also clearly irrational and illogical.
Sounds like you are emotional about it for some reason - there's no way that you could possibly be that oblivious to reality, imo.