What? It was ridiculously far removed from reality. First, he eats 3x10mg morphine pills. Morphine has a terrible oral bioavailability (and morphine pills are relatively rare). Any self-respecting drug user would at least google some basics. He talks about "withdrawal" and having to avoid being sick, so takes Suboxone (buprenorphine) which is stronger than his regular morphine dose! It's pure fantasy.

Also, he has an attractive drug dealer girl that just comes over to give him free drugs and screw him? I'm sure this happens. But I doubt it's remotely representative to say that happens to introverted semiautistic "hackers".

The most realistic depiction of drug use on TV is The Wire AINEC.

It is more than that, he clearly has a version of schizophrenia and maybe DID syndrome with Mr. Robot being a personality in his head that takes control of his body. He isn't always aware that Mr. Robot takes control. That one time in the cafe Mr. Robot showed that he could control Elliot's body and mess with one of the guys to get punched out. What Eliot sees isn't always reality.

There are also those three days Elliot lost that Mr. Robot took over to do the Evil Corp hack.