There's a whiff of the 'no true Scotsman' fallacy about this though. The OP was suggesting that some designers are focusing on the decorative aspects of design

There's a whiff of the 'no true Scotsman' fallacy about this though. The OP was suggesting that some designers are focusing on the decorative aspects of design because that's what looks good on a Dribbble profile. Given that 'making pretty designs' is a learnable skill and that at least some companies will hire people based on that skill, you're going to find a non-negligible number of people employed as designers whose primary skill is in making things that look good, rather than things that work well. The other problem is that even if a designer is conceiving the product holistically, if that design is communicated in the form of PNGs or PDFs, it's unlikely that their vision is going to be understood correctly. In a collaborative environment, everyone needs to be part of the design process, because many aspects of good design require an understanding of the thought process that leads to the product as an outcome. The idea of the designer as a visionary who conceives the product and then hands off designs for other people to build is a seductive one, but it very rarely works.