I don't think it's resistance, I think it's lack of exposure. I don't interact with people who don't use keyboards and monitors, I only find out about them by proactively looking at stats and user research.

Even though I know better all my products are still desktop-first then checked against mobile screen sizes. It's just the reality of how designers and engineers still work. We should probably get to a place where we have a secondary monitor that by default shows 3-4 virtual mobile devices the entire time we're working.