There's nothing wrong with being a Trotz fan. I'm a Trotz fan, despite the fact that I thought his time was up towards the end of last regular season. I think the Islanders are going to do better than expected because Trotz is a very good head coach (who has some warts).
Even if Reirden was the guy who took over the tactical side of things come last postseason Trotz was still the head coach and authored 4 incredibly successful years in DC. No doubt he was given an excellent roster but that doesn't mean that he didn't do a good job himself. As far as I'm concerned he's a Capitals legend.
All this being said, maaco defends Trotz for the same reason he defends Holtby, Bowey, and Stephenson while criticizing guys like Reirden, Grubauer, Djoos, and Vrana: he loves Western Canadians. It's incredibly easy to see and that's been his gimmick since the day he's started posting here.