Some parts of everyone's life are unenviable.

That said, I don't think it makes much sense to comparmentalize working lives into "enviable" and "unenviable" parts.

The end result is what matters, and the bottom line is that he has billions to show for it, can work as little or as much as he wants (the other stuff, that he's somehow "forced" is BS, he could take a decorative role in the company if he wished to), and he can retire at any time.

So what part should I show sympathy for? That, despite all these facts, he works e.g. 15-hour days? Well, so do tons of double-shifting dirt poor people, immigrants etc. Without the good parts, and despite their inclinations.

>If you dismiss difficult aspects of a person's life because somebody else has it worse, then nobody actually has a hard life

Not just "somebody else" -- 99.999% of the population. He has it better than statistically almost everyone on the planet. There are maybe 1000 or 10000 people in his position (net worth, age, etc.).