Completely agree, as you say, no one should be above criticism. When the criticism turns in to personal abuse, it’s a problem. I agree Murphy is a championship player and not good enough, and we should look to upgrade him whenever we get the chance too.
personal abuse is counter productive all it will achieve is too demoralise the player and his team mates because all of a sudden they think, after a few bad performances they’ll be in line for the same treatment. Not to mention the likes of Murphy is a fan and loves the club, so let’s look after him.