This rule is kinda both bad and good.. The good part is that it will for sure slow down the spammers/trollers. But I'm unsure if it's worth losing real users that only come here to make one fast simple post.
I agree about the spammers too. But I'm really stucked here needing to write anything but not constructive posts to achieve this rule and start what I really came here to do that is participate and create connections with people.
So you were happy on your post.