And for people reading this and going "In my app, I don't care about that demography, b/c that niche is too small/effort too big etc": Search engine bots are al

And for people reading this and going "In my app, I don't care about that demography, b/c that niche is too small/effort too big etc": Search engine bots are almost exclusively "disabled" users of your site. So, if you need to convince your managers or yourself to spend effort/money/time on accessability, SEO and traffic from search may be convincing if other reasons are not.