I do think using more pitchers is bad for baseball, but the direction it is heading in and probably is too late to stop. I think the fact that a team is using one at the start of the game is just semantics and odd to argue over. Tradition and fantasy are actually two of the biggest arguments against it (not making fun of Boxy here, this was a legit concern against it on other sites and by an old GM on MLB radio). What surprises me is that it this appears to be effective, and there are many here that never say a peep when a pitcher is pulled before the 3rd time through, that are opposing the opener. So it surprises me that many forward thinking people here that are against it.
Is it bad for baseball? Absolutely, it brings in zero fans. It confuses casuals, it pisses off traditionalists and likely lengthens the game. But it's innovative and people here should respect the f*** out of it.