Sorry for the late reply - didn't realise this post went viral. You're correct and raise a good point. I did it because I was insecure in my writing (I proofread every word though) but in future I'll write from scratch, even if it runs the risk of looking amateurish.
Please do this yes! A well-meant blog post written by a human - however "amateurish" you might feel it is - is probably going to be better than clunky AI nonsense. And remember, whatever you write doesn't need to be long winded.
Also, there's no reason not to use AI to help you get your thoughts straight, create some bullets you can write from, give you some structure - and then help you proof your finished writing.
The problem is that when you get AI to write something from scratch like this, it decides what the story is, and how to tell it. If you decide the key storylines, work out what matters to you, work with the AI to brainstorm some ideas and then write that up in your own words and then get the AI to help you polish it but not rewrite it you'll have far better outputs.
I posted a really long response to the parent comment, highlighting the stuff that made it stink of AI. Watch out for those if you do this sort of process.