I am sure they don't think we're going to switch by insulting us. (A lesson Apple probably learned right after the original 1984 commercial.)
So, why is this still so popular? I think it is a form of ideological immunization. IF you characterize your opponents derogatorily (extreme example: comparing jews to rats by the nazis) you rally your troops with feelings of superiority.
Once Apple users are seen as inferior, all their arguments immediately become null and void. Political parties do this too- conservatives are characterized by liberals as rejecting science, liberals are characterized by conservatives as being irresponsible or pot smokers.
I don't think this is good for society. I much prefer (no surprise given I'm an apple fan) the "I'm a Mac" ads that apple did. Though I think PC users missed out that the PC was the most sympathetic of the characters, because they expected it to be derogatory to PC users and so that's how they saw it. (illustrated by Microsofts "I'm a PC" campaign which was a response to the ads they thought Apple was making, not the ads apple was actually making.)
So, when Motorola says Apple is Big Brother who are they kidding? Nobody. They're just spreading rationalizations.