Actually he was given a free role for Wales and played very well, it doesn't encourage his bad habits in the least.
The reason why being given a free role or playing him in the three suits him is because it strips him of the responsibility of keeping the ball, bringing it forward or facilitating phases of play. It allows him to focus on getting forward and being a nuisance with his well timed runs and get in the goal scoring positions.
He does this regardless, the difference being when in a two or asked to have a lot of tactical responsibility he shirks his duties and leaves the midfield with a massive hole in it.
I'm not sure how anyone can try and say after all this time that Ramsey is effective in a two man pivot or a position where tactical nous is key.