Idk what age your dad is, but I’m 53 (gen-x) and my generation are notorious for being difficult to market to. Maybe he just blanks it out, like an automatic mute button. I used to do that but ads are far too mentally disruptive for me these days. I’ve had enough.
Krita has a better brush engine and the AI plugin is amazing. The live AI painting with layers is so cool. It’s like magic