Earlier quoted context omitted.
It's possible this is true, but then the author needs to stop acting like they are totally blameless and everything is just where the universe took him. All of the author's problems here are self-inflicted.
How could you possibly read that into it? The only blame I see assigned in the text is self-blame. Select snips: > I just misunderstood what was going on. > Now, Carl didn’t do anything wrong here. Carl is not the baddie either. He was a CEO, and major shareholder, behaving the way a CEO and major shareholder is supposed to behave. The misunderstanding was all mine. > But that anger was of course misplaced. If I had…
But the reality is that _all_ of the misunderstanding comes from him. There is no "mutual misunderstanding", Mojang understood the conversation perfectly well.
The author asked for an offer, Mojang offered $20k, and the author accepted. It's not reasonable to expect Mojang to "understand" the author is going to hold some grudge about believing they deserve more than the offer they accepted without negotiation.
The correct response from the author would be something along the lines of "I am entirely at fault, all of the misunderstanding was on my side, Mojang/Notch/Carl did nothing wrong".
Instead the author reminds us at every turn about how Notch gave bonuses to all the Mojang employees but not him, how they're such a great guy for not getting lawyers involved, and how they're turning their work into a "priceless gift" (despite being paid $20000 for it).