I think the media report this sort of stuff and try and make it look like it is solely Bono's organization and responsibility because he is mostly too much of a goody goody and they need to sensationalise issues. He and the rest of U2, with some exceptions from Adam at one point, don't do the normal sex, drugs and rock'n'roll stuff so they have to find other things to beat up like tax issues, Malibu housing situations and now the One bullying matter. The media work in a dying (or at least dramatically changing) industry where people want their news in small bites, don't want to pay for anything on-line and have more options than ever than watching the evening news, so the media has to sensationalise everything, use click bait techniques etc to get attention.
Sure, Bono has some responsibility re this issue but it couldn't and shouldn't be all about him.