Yes. But I think it also shows a common misunderstanding of "open source" (and even "free software").
What he did was incredibly valuable to a huge number of successful people and corporations. But no one owes him anything. That's the point of open source. If they did owe him something, they wouldn't have used it. They used it because it was great, it was established/known, it was available with no strings attached whatsoever. Again, that's the point, that's why it's popular.
But also, he owes them nothing. He doesn't have to keep maintaining the most comprehensive, up-to-date, and flexible package, as a full-time job, for free. He could could have just stopped after his first couple years where it was an inherently fulfilling passion project, he could just put in a couple hours a week, whatever. People would make do, it would still be quite valuable for a lot of people for a long time. Or those other projects and companies would come up with an more up-to-date alternative when really needed.
You really don't have to be a martyr, and we don't have to "give up on open source" or whatever. You can just make stuff available that you wanted to do anyway. Sometimes it leads to bigger opportunities, sometimes (usually?) not. Don't slave away and sacrifice your personal life because of what you think you deserve if you do, that's not going to materialize that way.
Remember this is all stuff just offered up with NO WARRANTY, NOT EVEN FITNESS FOR PURPOSE etc. And in practice it's super super valuable that way. Even without you sacrificing yourself. Let companies spend the big bucks on it, just work on what's fun in your free time.