This is the most reasonable short-term implication on Discourse (and similar platforms), IMO.
I look at something like Unlock Protocol see an immediate tie-in.
Example scenario:
User buys a token on OpenSea > gains membership to a site as part of the token ownership > site includes Discourse as part of the stack (along with, say, WordPress and a Discord server) > site authenticates membership via token in the user’s crypto wallet.