Personally I don't really care whether something "looks" real or not. I think it's appropriate for some things. Take for instance our upcoming plugin, BFD Player:
View attachment 8259
Versus BFD3:
View attachment 8260
Both have elements of skeuomorphism, but I know which one I'd prefer to use, and based on 10 years of complaints about the way BFD3 looks, I think I know what the users would prefer too!
But like I was saying... I don't think it is always right for everything. But where I think both Helix and Fractal go wrong is by steadfastly refusing to draw a heirarchy of importance when it comes to various controls. The obvious music equipment example is that of a synth, and the filter cutoff being made to hold more importance than most other controls - because historically, it
IS the most important performance control that most people care about.
It's up to the PO, UI, and UX teams, to do the research to find out exactly how people use these products and what they care about the most, and then - IMHO - put THAT right in front of them, and make it easy to use. Most of the time you'll come up with something that works very well for 90% of people, and the 10% will just post on Gearspace all the time about how they hate your guts. Fair trade off I think.
(stats pull out of my ass)