> Is this avoidable?

Instead of interacting with the cloud model directly, run a simple local model to interact with the cloud model and have it filter out all the ads before they reach you.

This is already what the chatbots do when it comes to interacting with rest of the Web, instead of you visiting websites yourself, they collect the information from the websites for you and present it in a format of your choice without the websites ads.

I don't see the ad model working out for chatbots in the long run given that those AI models already are the perfect ad filter.