Once we have spammers, and those click bait posts coming up, it will be no different than the other social networks or email.

In theory because you only replicate your friends and friends of friends, you only see posts from friends and friends of friends by default so if someone sets up an account and just starts churning out spam no one will follow it.

In practice, since most of us rely on pubs which act as friends there is an opportunity for spammers to follow the same pub as us.

That could however be addressed if spam and clickbait become a problem in future - and pubs might be considered a booster rocket that gets us out of the gravity well but which we will jettison once we are in orbit. They're necessary right now but hopefully we won't always need them or at least it will be trivially easy for people to set up smaller, private pubs and invite their friends.

If the clickbait is just coming from a real person within your social group then the solution is a slightly awkward conversation followed possibly by an unfollow or in extreme cases a block. That's not that different to how we would handle analogous situations in the physical social world.