I'll repeat more broadly: decentralized social networks (whether crypto or non-crypto architectures) are limited by supply of interesting and entertaining content.

If you increase the supply, audience will follow.

Everything else is downstream of that.

The "interesting" qualifier is key: 1m carefully curated and thoroughly thought casts by me, are less interesting than a single "hello farcaster" cast from a sports, music or politics celebrity -or even their teenage kid. 

This has been the inflection point for every social network.

Dad, geek, conversation liquidity provider. vrypan.net (home), @l--o--l (fun). devcoin:$lemon3

This is not necessarily true. See reddit.

Fun havoooooooor | Co-creator of the universe | FuckANiche.com | prev @forefront

Is there a source for this? Plausible but I don't often see it cited as the cause

Interesting. Reddit is probably the only social network I have not followed closely over the years. What were the pivotal moments related to its growth?