Nope, it makes none of that justifiable. And as I've said before certain things are definitely misleading, such as the trailers still being on the steam page and him saying that the E3 demo wasn't scripted.
Critique the game. Critique their communication (or lack thereof). Ask for a refund if you want. Don't buy anything he makes ever again if you don't want to.
There's just not a need to paint him as someone that lied from the beginning and act like he set out to scam people from the start. It's a ridiculous assumption, as I've said (and backed up!) time and time again. Going "The game was shit, their communication was shit, I'm never buying anything from them again, but you know what, I don't have the whole story so I'm not gonna say he's a scam artist, but I still don't trust him" is a more reasonable response, and there is no downside for you to do that.