Some of those people remain. UI-Marcus in that link is a good person. The company went into a steady decline after the CEO started centering the company around the offices in Portland and China. Portland was home to the UX designers who wanted to redesign everything to look nicer but didn't understand how customers used our products. Portland was also home to Nick Sharp, the cloud lead who tried to extort the company and lied to the press about hacks. The favorite office in China made the FrontRow product, which failed so badly that I doubt anyone has heard of it. These people were supposed to be the future leaders of the company, but everything they did was a disaster. We could all see the writing on the wall and left. Well, almost everyone.
I don't even know which Ubiquiti office owns the cloud any more because everyone working on cloud at Ubiquiti either quit or was laid off after the cloud lead went to prison for extorting the company.
I hope the company can get back on track some day. It's sad to see all of our old work decay like this.