"Still" have followers? Mechanical keyboards have been making a huge comeback for years, and are pretty much a standard for gaming and other high-end self-built machines now. You don't have to spend anywhere near $500 to get a good one either. This article/video sounds like it was written for an audience from six years ago or something.
Love my Corsair K95. Marketed as a gaming keyboard (it's got fancy LEDs and 18 macro keys etc.) but works well for long coding sessions too.