The whole exclusivity element of the design industry (fashion, interactive, graphic...) has always been a source of contention with me. On the one hand, I like working as a designer on projects as I enjoy the challenges and the output. And I've had the honor of working with some exceptional development teams in producing things that people use on a day to day basis.
But the justifications for gating sites like this one or Dribbble has left me with an incredible distaste for the industry because it's fairly prevalent. I recall being in class and having the elite designers scoff from their towers over the lesser skilled individuals, as if somehow there's no way anyone else could attain the skill necessary to improve their own ability. Even my ex-Creative Director who studied under some ridiculously strong designers (e.g. Paul Rand) had that mindset where you either had it or you didn't.
In contrast, when I'm learning things like deep learning or math, you have incredibly smart people who put out tons of free information or books, who actively help others on forums/Quora/SO on their quest to become better. And most importantly, believe in the individual to become a better person.