Link: https://www.theverge.com/ai-artificial-intelligence/978982/daddario-guitar-ai-music-suno

Sorry for the paywalled article, I couldn't find anything else. Here's a quote:
[First paragraph is just context of the prior allegations]

In a lengthy update to its post from July 29th (embedded at the bottom), it said:

We got this wrong. We’ve completed a full review and confirmed that Suno Studio was used to regenerate the original track. We shared inaccurate information, and we’re truly sorry … We do not support AI-generated music, and our process will reflect that going forward. We’ll require our employees and creative partners to disclose any use of generative AI, and we’ll more closely review everything we put into the world.

The post also apologizes for heavy-handed comment moderation, which saw posts from critics deleted and those users blocked. Rather than issue a new statement, it appears the company simply edited its original post five days ago, 10 days after it was originally posted.

The original video was a demo for a new set of strings designed for extended-range guitars and low tunings. People immediately flagged the recording as suspicious. Things only got worse when D’Addario posted a clip of what it said were the Logic recording sessions of the demo track in question.

Short version: they screwed up, then tried to deny it, then tried to explain away the evidence, then tried to shut down negative (factual) comments on their forums.

I like D'Addario, they're a family company, they make good products, but damn - in a time when all a music company needs to succeed is 'don't be like Fender,' they blew it.

It's gonna take a while to forgive them. If they had their CEO adress the issue in the first week and say they messed up and won't be working with the guy again, they could have saved their reputation. This way they have damaged their brand for a long while.

No need to buy strings then when sono is around.

Not only all of this, but while their apology sounds like they didn't know what their employees did and just missed it during their investigation, there are posts from the alleged employee that generated the video saying they they told the company exactly what they did. So one person says that D'Addario knew everything from the start, and D'Addario claims they were unaware.

There are plenty of good string makers out there, this is one company I will not be patronizing anymore.

Just ridiculously shortsighted that they derive their income from people playing live instruments and they don't even bother to hire those people for their own promotion. That's literally your customer!

Wow that sucks, but then again, are there other brands? (Yes, a lot)