He can't win. I wonder if he's being a reasonable Republican so Dems don't gerrymander him out in 2022. I'd like to think there are still some decent Republicans left like him but I'm skeptical.
I have some serious doubts about that, Illinois is going to lose one seat, so obviously democrats in the legislature will try to eliminate one of the four GOP held seat and IL-16 is the most logical target as the areas it covers are close enough of Chicago to be sunk into a deep blue district and as IL-16/IL-15/IL-12 need to be keep intact if you want to turn IL-17 and IL-13 into dem leaning seats
I'm not saying it would work, but maybe he's trying to curry favor with Democrats by not being a complete lunatic like the rest of his party. If I were a democrat gerrymandering there I'd find a way to gerrymander one of the deplorable out before him. Maybe it's too hard to do logistically but it does give an incentive to skip him over.