Why do you all think that the phrase “give them an inch and they’ll take a mile” came about anyway?
Slippery slope arguments aren’t necessarily wrong. In fact, they quite often prove to be quite correct.
The reason slippery slope is a logical fallacy is because it’s not NECESSARILY true that a person given an inch will take a mile. But vast human experience over every culture that’s ever existed on earth shows that very often, people who are given inches will try to take miles. So people are wise to be wary when people say, don’t worry, I’m only asking for X, I’m not asking for X+1 or X+2, etc.