Yep, having had created a few throwaway accounts I definitely got a sense of how the algorithm compensated for the majority of users who aren't super active. And it makes sense -- most new users aren't going to want to spend account creation picking 50 accounts to follow.

But if someone has hit the follow button 1,000+ times, it's reasonable to have some faith that they've seen a lot of tweets and know what they want. Showing a few out-of-network tweets seems reasonable (I got enough as it is through followings' retweets). But 50% of a feed that already can't fit tweets from thousands of followings just feels like shit.

The worst part is that the share of in-network tweets seems to be highly concentrated to the last 10 or so people I most recently interacted with, e.g. seeing the same user over and over just because I liked one of their tweets the other day. Which makes sense to save on computation costs, but it's pushed me into a much tighter bubble than I ever had when the timeline wasn't so out-of-network focused.