For the people thinking that there will be more smurfs/trolls and derankers. that's not entirely true. Sure this game is now free, but that doesn't mean that they can play in Comp matches for free.

Comp matches still require people to pay 15 dollars.

This is great because it deters cheaters from obtaining csgo accounts for cheap.

Remember, if you only need a csgo key to get a csgo account, then you can always go get it cheap from third party sites.
With this implementation, third party sites no longer can sell their csgo account keys, since csgo enables your account directly in their system.

Cheaters will have to pay a full 15 dollar to play competitive matchmaking. Not 7.50 from third party sites.

For the people thinking that there will be more smurfs/trolls and derankers. that's not entirely true. Sure this game is now free, but that doesn't mean that they can play in Comp matches for free. Comp matches still require people to pay 15 dollars. This is great because it deters cheaters from obtaining csgo accounts for cheap. Remember, if you only need a csgo key to get a csgo account, then you can always go get it cheap from third party sites. With this implementation, third party sites no longer can sell their csgo account keys, since csgo enables your account directly in their system. Cheaters will have to pay a full 15 dollar to play competitive matchmaking. Not 7.50 from third party sites.