It doesn't make you a bad fan but is rooting for your team to lose being a good fan? That let's get worse to get better, that doesn't always work.
Plus there is no guarantee that a bad season will accomplish what you want other than wasting a season. They haven't drafted and the team is not finalized yet and the disgust with the HC is so great that some are wanting a bad season?
What about the players? There are some guys on this team that I like, why would I want to wish a bad season on them? That 4-12 would probably do it for Dak and I really like him, I want him to be successful. I like Big Smitty, Yosemite, Lee and I am looking forward to seeing how this secondary looks with a full off season under their belt, 4-12 would pretty much mean we're back to the drawing board there.
I look at it this way. First, Garrett is not the worst HC and we could do worse and we have done worse so unless there's a new GM coming in to do the hiring, I am not optimistic there. I've been a fan through all of the coaches and I really liked and respected Landry but he wasn't the reason I was a fan. I don't really care for Jimmy Johnson as a person but I was a fan anyway. The HC isn't the critical factor for me as a fan.
I get the frustration but as a fan my hope is that he gets it. He becomes a better sideline tactician and game manager and his DC finally gets a D that can do something. I can't root against them, if I did I wouldn't be able to watch and while all of that sounds easy, try rooting against your team the minute that ball begins sailing through the air and you see your colors running down the field. Easier said than done.