Comment by vidarh

You've invented a whole new set of categories of pickpocketing that most people would disagree has anything to do with pickpocketing to justify a flawed argument.

To your last paragraph, no, they are not. There is no automatic implication that people will not change their minds depending on the situation. The argument is not that they can never change their minds, but that it is deceitful to pretend to only oppose illegal immigration in current circumstances and then go on to demonstrate they are also opposed to the currently legal immigration.