Maniacal attention to detail in products is very rare those days. As a born perfectionist I wish I could afford it for myself, honestly.

Then maybe he should handle Jai like he handles his games. Don't talk about it until it's almost ready to go.

...Except that he did talk about all of his games almost from the get go? He showed earliest prototypes of Braid and Witness publicaly when the games were just blocky protypes, in the latter case good 7 years before the game came out. I don't know where you got this idea from, the way he is handling the development of the language seems to be pretty much an extension of how he develops his games.

It's his hobby/passion project, I really don't understand your objection.

You seem to have a problem with the fact he criticises other languages. Would you also treat someone who isn't currently designing a language with the same harshness if they also criticised a language the way Jonathan Blow does?

But he is designing a programming language. Even if it's all a fantasy or a Python script, like you claim, there's still a design.

His opinions and views on PL design are still up to scrutiny, so it's not a glass house like you claim. PL design is not compiler writing. You're free to implement all his ideas and write a Jai compiler yourself if you need a proper compiler in your hands to properly criticise the language.

And frankly, the only thing mentioned on this thread about "80% features" is not as controversial as you're making it. Nobody here is claiming it as revolutionary or game-changing, so even if you're right, your posts are a bit uncalled for.

Why do you care?