I addressed that in the sentences immediately following what you quoted, but to clarify the point on algorithmic feeds:

I think it is relevant to any new social media, because even with an algorithmic feed, unless it's really badly done, you'll first start to swamp out an increasing number of those you follow once you follow a large number and/or have given a strong signal about which of them you actually engage with, so you're likely to get a "honeymoon period" even with one where the need for a huge following seems less important because your followers are in that situation too.