Leaving aside the question whether Python is actually readable outside of small scripts:

An untyped language or a language with a small type system and type inference like SML always looks more readable.

If things get more advanced, the syntax will grow. Now, whether Rust needs to look that ugly is another matter. I think they made some wrong choices and should have evolved more from SML etc.

Yes, the lesson is not to contribute anything of value to open source or another person's platform.

Creators need to use restrictive licenses, then all of these parasitical corporations will cease to exist.

Limiting the scope to software, I'd say it's fair to distinguish MIT licenses from GPL. The latter provides way more freedom for the user (as opposed to corporations willing to profit without giving back). I am fair more comfortable contributing to an AGPLv3 software as opposed to a MIT licensed one.

I can't talk about licensing for content creators (like youtube), because I do not have much experience about it.

No, you don't "remain the author". You have never been the author if you translate the real author's code base.

The license is the one of the original, since this is unambiguously a derivative work.