The OP makes a very good point, which it really feels worthy of considering - not that we are to blame - but that we do genuinely have the ability to impact the situation and the outcome of a game and season.
We are all in a position, each time we take our seats, that we (as individuals) have almost no control over the outcome of the matches we are watching. That's the hardest thing about being a fan. However as a collective, we genuinely can make a massive positive difference. The die-hard fans are the most vocal, and the ones that generally set that tone for the whole stadium, and those are the people with the biggest opportunity to shift the narrative.
That's not to dismiss the pain of sitting through what we've all witnessed. It was horrible, and has been for some time. We've all got the same frustrations with the lack of respect both club and fans have been shown by players and senior management alike. That however can now be consigned to history, if we put it behind us.
We now, have an opportunity to shift that narrative. Each of us, and we as a collective, get to make a choice as to how we greet the new season, each player old and new, and the team as a whole. If we get behind them, we can make a huge positive difference.
We get a chance at a fresh start - just as others at the club get. Shifting our collective mindset and the overall narrative could genuinely be the difference between an amazing season, and another painful one.