Statement simply not true. First example is comparing offline interface to online one - more realistic comparison would be to something like first BBS's and the experience with those was generally insanely slow.

I didn't bother reading the rant because I think it doesn't make sense but is just personal "feeling" of the author. Objectively speaking computers are insanely faster and can do much more things. For exmple I use Sublime Text editor with multiple plugins and features, and all those feel instant. Also with web apps that I use 95% of time the experience is very instant-like.