Clearly they've never seen the show before
fading into the background is exactly the kind of way to ensure you stay the duration because either the housemates won't nominate you or even if they do the viewers will lap you up cause you're invisible
Surely everyone knows by now the only surefire way to get yourself evicted - as demonstrated twice by John McCririck in perfect fashion, is to go in all guns blazing, piss everyone off, be nominated and then continue to be a part of the show and the viewers are sure to kick you out