removing the press space bar to sccroll down and having to use the mouse to scroll is painful and making using mumsnet more difficult for my disability. (firefox, desk top)
removing the back to top button from the bottom of threads is also difficult as there is a lot more clicking to find and then distinguish the small-light-blue-tiny-writing-buttons. definitely not something that can be done one handed.
I have difficulty finding information on screens and just can not see stuff sometimes. the back buttom at the bottom in the middle was reliable.
accessibility is ddecreased if there is lots of extra fiddly biuts to do. (eg emojis)