I think it was more like fuggit, put it wherever it'll fit. Of course the consumer will pay whatever it takes to get to it if it happens to be a PITA.maybe conspiratorial, but i think they buried it on porpoise, drive more $$$ into dealers pockets...
the duramaxs at work, the fuel filter is in the engine bay, but gotta remove splash shield from wheel well to get at it, so history of chevy burying it.
Everything is about $, if it's about safety, it's just because a lawyer said so
Engineering is smarter then we could hope to be, but are highly restricted by accounting. Many times it levels the playing field...