Again, I'd have to say if there was any "lying" going on, it was already obvious when 2 years after X1, we got a live action Spidey looking very much like he stepped out of a comic book.
I wouldn't necessarily claim anyone was "lying", more like certain people were going for a certain vision, and felt the comic book outfits didn't fit into that. A Wolverine who wears yellow and blue fits the world of the MCU. Bryan Singer's X-Men? Not so much.
Luckily, we've seen numerous examples of comic accurate suits from 2002 until now.
I guess when you cite Fantastic Four, you mean the 2015 version, because the '05-'07 version wore blue spandex suits.