I personally have a custom block on my setup, but I’m hardly average and use a qnap nas for my Linux service needs.
But to answer your question, yes basically most do. The average user walks into a best buy or Walmart and buys something in their price range. An even smaller percent will head to Dell or iBuyPower and buy a “low, mid, high” range of pre-builts and make few if any real customization.
They will do no research into GPU/CPU other than nivida vs AMD vs intel choices. They have no idea other than some very basic performance numbers eg I have 32G or ram and would give you a funny look if you asked them about vram.
Anything that has a remote interface is garbage. It’s all cursor mouse based except on a few devices.
It’s not as good as Plex by a long shot. If you have Plex pass no brainer. If not, I’d personally just buy the pass. On Xbox it was just unusable.