I call utter bullshit on everyone who gets all huffy about people who illegally filter because it is against the law.
What, do you always drive at or under the speed limit? No? Then explain to me the difference.
I think filtering mostly offends people's sense of "fairness", that filterers are "jumping the line".
That's fine, valid explanation of the strong emotions. But the against-the-law argument is instantly moot if you ever speed.