You're knocking down a strawman. Your argument is that the guy who invented the internal combustion engine didn't actually invent it because the guy who invented the piston is the one who invented it.
Xerox is known to be the inventor of GUI. Apple made it popular. There is a difference.
It's very much like how Apple invented PC but MS revolutionized and captured the market. I am giving due credit to all parties; you are omitting/trivializing all the conceptualization that went into an earlier concept - the ones that Apple's products were based upon.
This is a lie that you really shouldn't be perpetuating. This isn't a question of opinion, but of historical fact, an you are telling a falsehood. There's no debating it.
That is very much like believing in Flying Spaghetti Monster. It's logically irrefutable, but sounds absurd.
[Edit: Spell]