I don't consider Drexler's work to be "massive support" for MNT. I think that MNT is controversial. I think that one shouldn't introduce controversial material in a discussion unless you absolutely have to for some of the same reasons I think that Nixon being a Quaker and Republican is a bad example.

I honestly wasn't sure when I posted this whether anyone else here would feel the same way about MNT being non-obvious and controversial. It does seem safe to say that if MNT is controversial on LW, which is overwhelmingly sympathetic to transhumanist ideas, then it's probably even less popular outside of explicitly transhumanist communities.