Even if the average West Australian was clueless the media would make damn sure that everybody in the state knew that they'd just been lumped with Sydney's sloppy seconds. It'd be mentioned in every report, talked about before every game, speculated about by every pundit when the team was struggling, etc, etc.
It'd undoubtedly turn potential fans in WA off, and the only people that'd truly stand to benefit would be a relative handful of out of touch geriatrics in Sydney who the team shouldn't be for anyway.
It'd be a different discussion if we were talking about a current NRL side relocating, but we're not, and the Bears and Jets have little of value to offer Perth and their demands in return have been beyond unreasonable.