Not that I think bitcoin and others are truly deflationary, as the presence of derivatives and fractional reserve deposits means that overall they could still be inflationary, in the same way that M0 could experience deflation while M2 experiences inflation.
I think crypto is in a huge bubble, and I think ICOs are dumb and will eventually die off or be killed off, but saying that there are 1000+ cryptocurrencies is pretty misleading. It would be like saying that due to the various stock exchanges we have millions of fiat currencies. It's only true given a particular definition of cryptocurrency.
Outside of ICOs, there are probably only a couple dozen cryptocurrencies that are not piggybacking off of some other cryptocurrency's smart contract infrastructure.
Think disagreement between miners, changes to algorithms, forks of blockchains. Gold does not have the same risk.
One nitpick: I think the SEC ruled ICOs to be comparable to certificates from what I understood. This is quite different to stocks. I could be wrong.