I hope you mean just from been captain which I suspect you do?
As Buttler still a world class batsman one terrible tournament doesn’t change that.
Also senior players have to take responsibility for massively underperforming on the biggest stage, most of them have been capable for a number of years and should also not be excused for their own performances, it can’t all be down to Buttler, although do agree with a lot of what you have said.
Having said that taking the captain away from him could be the best thing to get our best player performing again so may not be a bad thing.