It’s fascinating how much over perceptions of GMs can change over a few months
For some GMs sure, but for other its the opposite. It's amazing how much good a GM can do in a year and still not get the recognition for it, or for how many terrible moves a GM can make and still not lose any amount of reputation.
Stan Bowman is the big example IMO. To me he's a Bottom 5 GM right now. Yes he won the Hawks a number of cups, but that was quite some time ago. And in the last number of years he has given out some terrible contracts to his older aging players, he has made some very poor trades and free agent signings, and his draft record hasn't exactly been stellar either. He's not in the levels of Chia or Bergevin or Dorion by any means, but he's definitely in that next tier of guys who just have not made very many good moves of late, if any for that matter.
On the flip side, and maybe this is some hometown bias from myself. But I dont believe Joe Sakic has made a single poor move in the last 1.5 years now. And has turned a team that had a Bottom 10 prospect pool just a couple of years ago, into a Top 10 prospect pool now in the league, on top of being a playoff team as the youngest team in the NHL last year, and a prospect pool that will only get even better over the next 12 months as the Avs have the opportunity to draft 5 times in the first 3 rounds of the 2019 draft including a 1st round pick that is an early favorite in the Jack Hughes sweepstakes. And yet on a number of lists(Like the OPs) he's still far down the list in the bottom 1/4 of the league.