I think most of us here know better than to think we can convince you of something when you've already made your mind up about it
I don't think anybody here is arguing this team has much more in them than 6 or 7 wins.
One of the things I keep thinking back to is the 2013 season. That team had less talent across the board (minus OL and probably CB as well), an inferior coaching staff, a tougher schedule (had 5 opponents who won 11 games or more) and was still two Pig Howard mistakes away from 7-5. Hell, even with all the problems the team had in 2017 they were still two plays away from 6-6, despite being the worst team in school history.
Lamarck had troves of fossil and biological evidence to support his conclusions about inheritance of acquired characteristics. But he was lacking a few vital pieces of info and looking at things the wrong way, so ultimately he was wrong.
I think that, as fans, we're lacking some vital information about a lot of players on our roster. There's really no way for us to quantify how much their poor performance in 2017 was due to lack of ability and how much was due to poor motivation, poor coaching, poor schemes, or general staff dysfunction.
We'll see in a few months whether many of our struggles in 2017 were due to a toxic situation or whether it was just a matter of everyone on our roster sucking. I'm not making up my mind either way until we've seen what Pruitt gets out of them in 2018.