A good share of the "white knights" don't particularly care if they're throwing money away in cases like this, or even if they enrich an opportunist. If the rabbits in the warren have determined throwing money in direction X is a way you show you're on-board with the right-think; the proceeds could be going towards buying someone a Maserati for all it matters to them.
What matters here is that Quinn has created a service "for Gamergate victims". The political and social utility of that alone is high for anti-GG - now when the media talks about GG, they can talk about the support service created just to take care of their "victims", which will serve as evidence that GG and every person associated with GG is a bad person, in and of itself.
Go ahead and announce a support service - which can be as little as a website with an email address and a bunch of 'concerned people' - for 'victims of anti-GG harassment'. Watch how it's regarded and treated by the journalists, despite there being documented cases of anti-GG harassment.