Stormfront as 43,000 members? That's rather disturbing. However, to be a threat, a sizable number of them would have to be coherent or articulate, else they'll be shot down as garden-variety vandalism. Frankly, I wouldn't be surprised if we've blocked stormfront members before, for making racist edits.
Wikipedia would not be able to handle 43 Vogels. Even 10 would tax its current resources and structure. If 1 in 4000 is intelligent, coherent, and motivated, Wikipedia is in trouble.
Jay.