Probably true. That said, I spend most of my time querying LLMs for more objective and less financially motivated information. The only time I ask for recommendations is for new routes to explore by bike, and even then it will adapt if you tell it why a route is bad.

I suspect that product and service recommendations will be a near impossible problem to solve. Any time there is a potential for financial gain, someone will figure out how to game the system. Even if it could be resolved, the queries would have to focus on objective criteria ("best" is too subjective).