You mixed it up. Actually, it's usually "high level JavaScript programmers" who are "trying to reveal the huge limitations". Because they are not happy with the fact something else can be used for client-side web-development other than JS.
Please be more welcoming. We don't have enough programmers, no one is taking anyone's jobs away.
What they are all looking for are savant developers who can code a new linux in a day, who will do that for a pittance, who are willing to work 100 hours per week, who want to work at some bullshit web startup which hopes to be just disruptive enough that they get bought out. Any lesser people are outright ignored.
This requires stuffing hordes of people though education/training in the hope that just a few gems will be created.