My 2 cents, as a former visual designer, now senior UX designer - Dribbble is a place where lots of pretty baubles are on display, where flash is valued over process, and where it's very hard to get a sense of anything other than the showcased designer's visual acumen.
When I'm interviewing a designer, I don't take it as a positive or negative that they have a dribbble account. If they're interviewing for a position that is primarily visual design, I will peruse their stuff there just to get a sense of their style and capability, but not as a final deterministic factor on their hireability.
Dribbble was never really meant to be a place where people showcased their process, just a place where they could throw out a quick snippet to get reactions. Visual designers find that extremely helpful. If you're not versed in the ideas of typography, color theory, moodboarding, concepting, or any of the other methodologies and tools in a visual designer's wheelhouse, then looking from the outside in at Dribbble can make it seem like a world filled with trite, inefficient, fantastical non-reality.
You're not alone in this. Even I, as a former visual designer, have to tell myself that when I go clicking through Dribbble. It's not a place to showcase fully-polished, finished products - it's not a product marketing site. It's not a place to showcase the messy process of product design - it's not a portfolio site. It's a place where people can toss out ideas and get feedback on the micro-points of it. The colors, they typography, the alignment. Start to expect anything more and the model of the entire site falls apart.
For better or worse, Dribbble is not built to scale as a place for the critique of the entire design process. I think that's where this article gets it wrong. There are plenty of things to critique the site for - the lack of real meaningful engagement, for example, or the highly exclusive invite-only nature, for another - but fundamentally the OPs of this article are projecting thoughts and ideas about what they think/want Dribble to be vs what it actually is.
TL; DR: Dribbble is a place to showcase digital visual art and design artifacts, not a meaningful UX or UI portfolio catalogue.