Except that Mr Robot was always planned that way, you can go back and see references to what's revealed in the final episodes as early as the pilot. Things are revealed at the end of S1 that make you have to re-evaluate what you've seen so far. The same is probably even more true for S4.

Maybe that's a challenge for the audience to stay with it, but it's definitely worth it for the payoff.

And those s04 episode titles matching http error codes? That might be the most masterful thing I've ever seen pulled off from a TV show.