If he didn't believe in him from the start then fair enough. If people think he's done because of injuries then also fair enough I guess (even though I don't agree). What I don't like is people judging his potential because of the last year.
Personally I saw Ekblad as franchise defenseman. A future Norris winner, selected 12-times-in-a-row-at-the-All-Star-Game type of dman. Ryan Suter with a higher offensive upside. If you have the possibility to buy low on a guy like that you need to do it.
As others have said, I've never been a huge Ekblad fan. I saw a player who got a lot of overvaluing from being a complete freak of a man against junior players while not displaying a lot of tools for it (IQ, offensive ability, skating).
I saw and still see him as a Dion Phaneuf type of player who took the league by storm earlier on due to superb athletic ability. However, over time as the rest of the league adjusts to his game, he should struggle from his franchise label.
Now don't believe I think he's a bad player. As I write this now I will say he is not a bad player in the slightest. Though he isn't a franchise or #1 defender, he probably will top off as that solid to average #2 as Phaneuf is even without the concussion issues. As for the record I would take Phaneuf on this club, I suggest he got far too much hate for playing in Toronto while he's still a solid top 3 defender. Maybe he's not worth his contract, but Avs could do much worse.
One part of your other post I would like to say you're wrong in is my quote of "not even close to". That is more due to MacKinnon than it is to Ekblad being a player not worth getting. As I said above, he's a solid player I would absolutely take on this club. BUT not for the price of MacKinnon, he's a player I would trade Duchene or Landeskog for. MacKinnon is a player you want to trade for a player who thinks the game at a high level, that is Werenski, Provorov, Hedman, Brodie, Ekman-Larsson, etc., pretty much players that are as untouchable as MacKinnon is.