Point the author makes is precisely that they don't want to do free software, and they'd like to convince you not to do free software
It seems like the author of the post is just potentially having a change of mind from one side to the other, which barely even seems noteworthy.
To be honest, I don't think the space between GPL/MIT and commercial closed source is explored enough. I'm aware there's a few examples of things in between, but they are not common knowledge and they don't satisfy everyone. It is not a space that is easy to search online for established wisdom and comparisons in.
Clearly this sparked enough discussion and upvotes to make it to the front page of Hacker News, so people found it valuable.
Sure, but they are not suggesting any practical alternative by issuing a license that essentially boils down to "Please don't use this if you are evil".
Saying that the author has an almost childlike understanding of what the word "evil" means is something of a slur against actual children - I've got a 6 year old who understands subjective morals better than this author does.
MIT: free for anyone, do whatever you want
GPL: free if you also make your software free
AGPL: GPL but SaaS can't circumvent the requirement to make your software free
I see why principled open source proponents would select GPL or AGPL. They don't just want their code to be used freely by others, they also believe more software should be free and using GPL helps with that.
GPL restrictions don't make software under the GPL not "free" as in freedom. Just a different philosophy.
FWIW I have the same quarrel with people who talk about a country being "free". To my mind, a truly free country would have no laws. It would be a horrible place, because the restrictions that laws place on us tend to make things better for everyone (we may disagree on this law or that law, but some laws, like "Don't kill someone without a very good reason", would have >99% popular support anywhere in the world).
"More free" does not necessarily imply "better"; it could be better or worse. I'd like to shift usage of the words "free" and "freedom" in this direction, but think it's probably a lost cause as the words are too emotionally charged with connotations of "good".
MIT: freedom for devs
GPL: freedom for users
AGPL: freedom for SaaS users