Mainly I don’t like that the pie charts are hard to tell what is what. If there are 6 or 7 things and you have to tell which is which by colour, that’s a bit tricky. Labels on the sections would be better, but I haven’t worked out how to do that.
Maybe if I think a pie chart shows it best, I’ll also include the bar chart so it’s clearer.
I dunno. I feel something like this works better as a pie chart.