I won't disagree I just have to say I've been pretty conflicted about his value the last couple years. I think he is firmly in the both overrated/underrated category where I doubt anyone (nationally fans etc) really knows his true value.
Courtney Lee and Jared Dudley jump to the top of my list. I'm guilt of overrating Lee a couple years ago. I think Jae Crowder definitely belongs on the list as well.
Jason Tatum doesn't belong on this list. As a rookie with one year of college, Tatum averaged 14 points, 5 rebounds, 1 steal and only 1.4 turnovers in 30.5 minutes a game. He shot 47.5% from the field and 43.4% from behind the arc and 82.6% at the line. I haven't looked at his advance defensive stats, but I suspect they're pretty good since he plays for the Celtics. And he was one of the core three on a team that won 55 games. Given what Tatum in his one NBA season, I can't recall any posts on this Board that could be interepreted as overrating him. In fact, I can't even imagine a post overrating him short of decaying his the second coming of Michael Jordan, LeBron James or Kevin Durant. I don't recall any posts even close to going that far.
As for Otto Porter, I actually don't remember any recent posts on him. His numbers are actually very solid -- 14.7 points and 6.4 rebound, shooting 50.3% from the field on 11.5 shots per game and 44% from behind the arc. I'm not a huge Porter fan, but any posts praising him would have to be really over-the-top to be characterized as overrating him given those sold numbers.
I guess that Zach LaVine could be viewed as overrated by this Board, but that's probably the homer factor since he was once one of our own. Nevertheless, I don't think anyone on this Board went further than suggesting he had the potential to be a future allstar. No one put him at that level quite yet. I don't think his limited set of games after ACL surgery is a good measure of him as a player relative to the praise he's receive on this Board. Better to look at his 2nd and 3rd seasons before the injury. He shot 45.2% from the field and nearly 40% from behind the arc in his second season. He then shot nearly 46% form the field and just under 40% from behind the arc in his third season -- both percentages on relative high volume shooting -- and scored 19 points a game. You'd have to go pretty far in you praise to overrate him given those numbers. This Board has generally acknowledged his shortcomings defensively. So I think don't think we've overrated him on this Board other than perhaps getting a bit too optimistic about his potential.