I main a healer, I have all healers at 70...and I can't recall even one time I witnessed a tank getting removed just because he chain pulled.

Most of the time when I see a tank get kicked it's because they do something stupid like refuse to use their tank stance despite having very obvious aggro issues and having extremely spiky health...or some wiseguy in Brayflox with the novice hall gear. Sometimes these tanks were chain pulling, but they weren't removed for chain pulling, they were removed for making the instance a mess for everybody. Most dps and healers don't like when the tank's antics lead to everyone tanking.

OP if you're getting kicked often then you're doing something wrong. It's one thing to frequently encounter problematic players, it's another to drive people to kick you. Either your tanking needs work or your attitude does.