"...support and community management roles..." are less scalable? Does this mean companies are finding it more difficult to fill community management roles than developer roles? Also, what do you mean by "no less valuable"? I don't think you can have a company who's product is software without developers. You do not, however need community managers. You make an interesting point: I do wonder if those in "soft skill" roles perceive their roles as equally valuable as software developers. I personally do not.
Support and community management are less scalable in the sense that the relationship between user interactions and time needed from staff is fairly linear. Each one is therefore less valuable, but collectively (no pun intended) essential when there are other, hungrier alternatives.
At it's current stage of maturity, the Kickstarter platform needs maintainers (SREs, Security, etc.) and staff to interact with creators and backers. I don't know to what degree new features or efficiencies will help Kickstarter become more profitable on 5% than it has been since 2010 - the product is essentially the same.
Hmm... If I worked as customer support at Tesla, I would not expect to be compensated, or frankly valued the same as say an electrical engineer at Tesla. And really, isn't community management just another word for customer support?