The 18 superhero films that come out each year should maybe focus a little less on the origins of these superheroes and a little more on how superhero powers actually work. Seriously, does anyone not know how Peter Parker got his powers at this point? Yet, almost no one knows exactly how Peter is sticking to those walls. Luckily, even if the movies haven't delved into the details quite yet, the comics certainly have. There have been decades upon decades of pages to fill at this point, so just about all the good hero superpowers have been fully explained.
To be fair, some of these misconceptions about heroes' powers come from the constantly in-flux nature of superhero comics. A power that started one way may later be explained to function entirely differently. There's a ton of misconceptions about superhero abilities, and it's about time they finally got cleared up.