I don't agree with OP necessarily but just because one may think it's BS doesn't mean they think the public and traders think that. So shorting it wouldn't work out for a while in that hypothetical.

I don't have too much knowledge about cryptos. And the ICOs occurring certainly seem mostly like BS, but I'm still "investing" (more like trading quickly and selling) to make a profit while this gold rush lasts. Doesn't matter how I feel about it.