I’m an ex web dev but I still maintain a few non-profit websites. It adds a much t my time load to make sure, what I sometimes a quite complicated system, mobile enabled. And even then it’s often more difficult to use a website with a lot of information or a necessarily complex store/booking system on a mobile phone or laptop. A larger screen with more screen real estate can make UX much nicer. But people have this perception that convenience or ease of access translates into easier to use. Hell even just using a keyboard n a desktop compared to a phone keyboard.