While the Algorithm(tm) is complete garbage, you could also probably add less Totally Random Persons(tm) to your "friends" list.
If Totally Random Persons(tm) are getting added automagically, we have bigger problems.
Try it out. I'm pretty happy with it; managing the feed doesn't feel like trying to hold back the tides anymore.
You feed the Algorithm(tm) garbage and it returns you garbage, and somehow it's all the Algorithm(tm)'s fault.