That doesn't have mechanical key switches, which is what Das means by "mechanical keyboard".

Yeesh, mechanical black keyboard, that's rather kind of like bragging about having a VHS player with fastest rewind feature.

You've clearly not typed on one. Many people much prefer the experience of typing on a mechanical keyboard than a standard rubber dome one. Try one and see, there is a very tangible difference.

Other than Topre switches, which are crazy expensive, what else would feel as nice as typing on these?

thinnest mechanical keyboard