As a leftist I don't think it's ecofascism. I just disagree.
Living in the pre-industrial world wasn't much better, see getting your face eaten by a leopard and driving animals extinct from over-hunting. And dying from an easily curable disease. And not being able to support the population the planet now holds.
And of course, that leads to the question, what happens to the billions people who couldn't be supported in a primitive society. Well, they either die, or they restart civilisation, so. You'd have to stop them to preserve the primitive society, the methods of doing so would have to be pretty fascist.
ziq wrote
at this point even the mildest green ideas are called ecofascist by anarchoyuppies.