Discussion on HN is where I saw this for the first time. https://news.ycombinator.com/item?id=43302132

Mastodon link: https://mastodon.social/@tomusher

I love (/s) how YouTube went from “If you want to see new content from this guy subscribe” to “If you want to see new content from this guy subscribe and click the bell icon” to “If you want to see new content from this guy subscribe and click the other, bell icon that will notify you about ALL new content (until we find a reason to filter that as well)”