Even in the event that Wu is possibly faking her support to get asspats, I don't particularly see anything wrong with her retweeting and showing "support" to Total Biscuit. Like he said, he has, at best, a three year life expectancy (although he's fighting to survive this). In the event that she's faking it, well... great. We've successfully trolled her into being a decent person and showing support, if even only surface deep, to a guy dying of cancer. Hell, if she wanted to stir up Anti-GG cred she probably would've taken some sort of quip against TB since that would've fucking rolled in the controversy train.
Just saying. I think accusing Wu of being scummy for retweeting a terminal cancer patient's tweet is, well... I dunno, doesn't fit. At best, she's actually genuinely supportive (which is unlikely, but still possible as I want to believe everyone is possible of empathy), and at worst, we've managed to delude her into being a decent person for once.