Well you didn't really succeed. Your argument against using const comes down to "someone might violate expectations or remove the word const, so let's not even try". I don't agree with that.
Traditional constants are used to show that nothing changes in large swaths of code; showing how much benefit you get in a standalone 12 line function is not meaningful.
Also, calling function scoping bad is not revisionism. That is not a new idea, and does not depend on 'let' existing.
Edit: And the the article you linked about let is saying so many ridiculous things I won't even try to respond to it, but jeez. 'implicit'
You did an absolutely horrible job of summarizing even remotely what my argument was, so I guess "I won't even try to respond to" this, since you either can't critically read or didn't care to this time. jeez.