You should offer at least a shred of evidence when making accusations like this.
https://beomniscient.com/blog/the-9-best-llm-seo-agencies-fo...
I don’t think the burden of proof for seeming reasonably likely is terribly high. That it sounds very much like something they’d do seems sufficient.
Just wait for “$1000/mo for a 10% chance your product is mentioned in the AI summary for an auto parts search”.