It’s like how Disney Plus “ad free” tier shows you ads for Hulu and Disney Perks. They probably redefine “ad” in their terms of service so their own ads are called something else.
I looked into it at one point, as I was disgusted by the unskippable advertisements when paying for an ad-free tier on one of the myriad streaming platforms. Apparently, they distinguish between "advertisements" for a product or service and "promotions" for themselves. I get why that would be a reasonable internal distinction, as the former would require sign-off from the business paying for the advertisement, while the latter would only need internal approval, but it's a pointless distinction after that.
Yeah it's just helpful tips and suggestions. It's a feature, you see!