Yes, it is true, but AI product is a broader term, these days, every product new or old, is using AI. For my startup sekorti it is still SEO the main driver but recently i have started to see decent traffic from AI platforms like Gemini and ChatGPT, but in my experience, moving forward your traffic will primarily be based on your GEO optimization.
I'm curious what you mean by "AI product"? Do you mean a product that using AI, or a product used by AI? For the former, it's the same problem as it's been forever: distribution. That can be through SEO, AEO, outbound sales, advertising, etc, etc. I do think that AEO is something you should be optimising for. At the company I work for, we've seen inbound go from virtually nothing to top three in the last 6 months.
Most useful thing we've done: find where people are already complaining about the problem. Show up there. Not to pitch. Just to be useful. Discovery followed.