More people would if mobile apps weren't horrible. I have schwab and fidelity and the lack of basic features like listing option greeks, auto refreshing tick values, L2 data by established brokerages is baffling.
This is a silly no true Scotsman argument. A screen of information is a screen of information. There's nothing that can be displayed on a desktop screen that is somehow incompatible with the pixels on my phone or tablet, which both have higher resolution than my desktop.
Do it on a desktop, and know what you're doing.