Your post clarified my thinking on this. If I think of Notes as a Twitter clone then I'm upset because, like the parent poster, I want a much narrower subscription-base for long form content than I do short form content. However, if I think of this as merely a short form update from accounts I follow then it's fine.

That said, Substack showing writers adjacent to your subscriptions in Notes makes if feel more Twitter-like in a way that I'm not sure I like.