Regardless of the composition of LW posters, this is not a probable hypothesis:
Power bases in business and politics that have been forged over decades, if not centuries, are being threatened with extinction, and they know it. So the owners of that power are trying to hold on. They think they can do that by dragging us backward. They think that, by growing the public’s dependency on government, by taking away the entrepreneurial spirit and rewards and by limiting personal freedoms, they can slow down progress.
A big, scary "they" is, in general, a silly concept. A big, scary 'they" focused on impeding technological progress is silly on enough fronts that it bears expressly pointing out the silliness, lest it quietly adjust one's priors without one noticing.
Edit: An explanation of downvotes would me understand where I went wrong.
Since at least Adam Smith, we've known that you don't need a big collaborating cabal conspiring toward a common end to have the net effect of their actions be quite like a big invisible fist with a malevolent purpose.
From the final chapter of his new book Cowards, titled "Adapt or Die: The Coming Intelligence Explosion."
The citations for the chapter include: