Mass TP's sighs, we obviously need to deal with them and I certainly remove those people too.
To me it is disrepectful and no friendship and if it can be called a friendship it is a selfserving one.
Like a "BUY MY CATS DAMNIT!!!" friendship; a bright signal to never ever buy any cat what so ever from such person again
I have no feelings of guilt about that it is my SL and I won't let it ruin by others.
And hey, removing people is not as bad as them getting to deal with my annoyance.
I think it is absolutely a fair and mild correction to remove such person for a friendship which really wasn't one.