IIRC stickies are also excluded from feed once they get this attribute.
But yeah, we don’t even understand what a barrier switching to fediverse sites is for regular joes, jemmas and jermas. Like, for many people the internet is suggested apps’ feed and, rarely, their browser’s default start page. They don’t choose anything, and why would they? And here we are, challenging them to do something on intent while they are pretty happy with what they have now.