I'll be honest as a young voter the u turns are the most damning for me. It feels to me like he's more concerned with trying to stay middle of the road and regain public popularity than doing his job. I don't know how true that is given the longer things have gone on the more hated he seems to be. Either he actually doesn't care or he just doesn't understand why he's so unpopular and keeps reinforcing decisions that make him unpopular.
Like I want a leader who leads and stalmer seems like a beaurocrat thrust into a leasership position and unwilling to make any real long term improvements to the country. I think he was planning to just keep the status quo until the next election in the hopes the public will understand the tories just make things worse and then coast on that for a couple more elections, eventually making small real gains... But the country honestly does not have the time or patience for that. I certainly don't.
Even now I think if he was gonna resign he should've at least pushed through some meaningful changes and take the hate with him. Proportional representation for example. Instead he just punted that to the next guy and ensured the downsides of making a change like that impact the whole party instead of just him.