Blocking does abosutely nothing...

Blocking a player does nothing at all, when it should do many many things.

I recently played a game with a player who damn near ended world hunger single handed, and then flame the living shit out of us then entire game. Slinging curse words like they were an 8 year old who just learned them all. At the end of the game he continues the flame in the post-game lobby. By this point I've had enough. So I block him, and what happens over the next 5 min is astounding.

1. he continues flaming, AND I CAN STILL SEE IT? Blocking should work something like how facebook does it. If i block someone, I LITERALLY dont exist to that person anymore. They cant find my page, they cant see my comments, and I cant see theirs. Now that may be hard to do, but its just a general example.
2. 3 minutes later I get him on my team again. Great stuff... aaaaand he recognizes me. aaaaand the flame starts again before the game even starts. And during the game I am constantly bombarded with pings due to the fact that im not responding to him because i muted him in game asap.

Why does blocking another player even exist if i can still get in a game with him on my team, and i cant still have a full conversation with him in and out of the game. Ooooh woooo he cant be on my friends list. Well of course he cant because why the hell would i ever put that kind of person on there. I believe something needs to be done about what "blocking" actually does.