Tom Scott's 3-part series (on YouTube) a few years back on "How to be popular on the Internet"[0] has similar advice. There are higher-cost and lower-cost ideas, but given the amount of randomness inherent to getting popular, quantity tends to be the more important factor. He of course says it much better than I can.
[0] URL of first part here: https://www.youtube.com/watch?v=h0AMaW4XRCI