According to Alex's own tweet, ChatGPT originally produced the obfuscated code too.
In my head, this is like asking someone to translate "Hello" into French and then asking them to translate "Bonjour" back to English. It proves nothing about capabilities or usefulness.
Especially given that the "obfuscated code" is not syntactically valid. Even if you repair the syntax, it contains a number of errors, and eventually descends into gibberish (although some of what it does is not bad!). There is nothing to deobfuscate here.
In my head, this is like asking someone to translate "Hello" into French and then asking them to translate "Bonjour" back to English. It proves nothing about capabilities or usefulness.