The popularity of games like Shadowdark and DCC suggest that more-or-less traditional dungeons are very much ‘still a thing’. They’re not everything, but they’re still a thing.

The “what percentage do you think” vs “what percentage are” would be much better either as a scatterplot with a y=x line, or as a ratio (think/are) vs actual percent

Here’s a rough plot of the second thing. There’s a number of issues with it but I think it more clearly conveys the crucial information

The first plot might arguably be better but you couldn’t really see the way the ratio of overestimation decreased with more immigration as clearly as this one.

edit: Damn that came out way smaller than I expected. It’s readable if you zoom in