I am one of the big haters of AI on the forum, so I don't recommending using AI anyway.
This being said, using AI particularly for product descriptions is double bad as the AI doesn't use your products so it can't know shit about what's good or bad about those products.
Now, if your products are common and bland, boring stuff (t-shirts or mugs for example), you could use AI since there's not a lot of information that's unique to such common products that you can use.
But if you're talking about more complex products (gadgets and other tech stuff), then I wouldn't use AI as these products can be so complex that you can definitely come up with unique descriptions for them.
I know this because I was tasked with the same thing by the company that I've worked for in 2014, they were selling industrial electronics (PIDs, termographs, sensors for various environments / substances, etc), so one of the things that I've been tasked with was to make the descriptions for all of our products SEO-friendly... Ok, back then there was no AI, that's true! But even so, the AI would have not been capable of delivering high quality (and personalized, of course, since that's the most important part of writing product descriptions) for our products since it's not a human so it can't feel / know what's good or bad about those products...
And besides, google are pretty good at detecting patterns (or templates, as it's the case with AI content), so if all of your products have the same content patterns it's gonna be obvious to google that zero effort had been put into those products, which - on its own - might not be bad. But google track everything, and if they see that your visitors are also put off by those bland, copycat descriptions that's going to hurt for sure...
Moral of the story: just put the effort in, for the sake of your visitors if not for any other reason. Despite of its hype and situational advantages the AI still can't compete with humans, so no matter if you're going to write those descriptions all by yourself, or later on "humanize" (god, how I hate this word!) them, you're still going to need to add a human touch to the AI slop eventually. So, why not do the right thing properly from the beginning then?