[az09mugen]

Yup, just a problem of a misplaced comma I think.Let me rephrase it : "AI is used for work, but my website, and all the content in it, is entirely written by hand." I wonder why your comment gets upvotes until getting to the top.

[WCSTombs]

Or simply:

"While I may use AI for work, my website and all the content on it is entirely written by hand."

I don't think the original syntax is incorrect exactly, but too many commas in a sentence can make it harder to parse, which is why style guides often warn about it and advise thinking of certain commas as "optional."

[tired-turtle]

It is a great example of a garden path sentence.

Our brains’ initial parse of that sentence, while sensible and probable, is incorrect. That is, the mind really wants to interpret “...for work, my website, and all...” as a list, but that leaves a dangling clause!

The sentence is grammatical but confusing.