At the moment, mobile strips out all reply to information, on topics where there are a lot of back and forth responses this can cause a large amount of confusion.
This issue was raised on BBS and TDWTF. So its a “repeated request via complaint driven development”
It also bothers me personally. I use mobile a lot.
I think we should at least add an admin option to display the “arrow glyph”, though I would prefer username as well.