This is partly answered in the video that was shared. Technology has advanced and, like with all technology, the point of entry lowers. This is due to cost and complexity coming down.
The same thing that would go wrong if any untrained diver of any skill level went and purchased a "tech" CCR?
I thought the dive community was past the tech-jock-bro phase.
Really, what is wrong with diving a CCR at recreational limits? I know that many underwater photographers and videographers would love to not be blowing bubbles. Yet, they may not be able to justify the current cost of the typical CCR.
All in all, any CCR requires training and certification. It doesn't matter if you are a lowly rec diver or a tech-jock-bro, if you aren't trained on a CCR, don't use it. As with any SCUBA equipment.