Comment by varenc

For browsers that implement strict cookie partitioning, the privacy concern is moot. With this, the cookie jar that's used when chatgpt.com is a 3rd party site is completely separate for the jar used on the 1st party site. So your chatgpt.com account can't be linked to your ad views.

Since this has been standard ad tech for awhile, browsers have reacted to this to implement cookie partitioning for exactly these privacy reasons.