Can't speak for GamingGlen but I can't stand her because every episode has to have a 'Daisy corners someone to talk about their feelings' conversation. I think initially it was that they didn't really have anything for her to do between being the newbie stand-in for the viewer and getting her powers so they stuck those scenes in. Then it became a really annoying habit, especially as the conversations were usually really contrived. And they kept it going even after she got her powers and had enough other things to do.
Oh and they just announced a new cartoon with Quake in it so I'll get to hate her even more often.