Why are trailblazeits considered so bad? They're comfy and

They aren't inherently bad, I've spent a good amount of time driving one. That straight six engine was actually the last american straight six and as you said it makes plenty of power and those torks are available almost immediately. Biggest complaints are a pretty forgettable interior and exterior but I've seen some prettied up ones that looked alright. People also liked to neglect them which is why they aren't popular as they get higher in mileage but the one I drove was at 70k and doing just fine.