Ask HN: Why does Firefox treat 3rd party cookies from Google differently?

I run Firefox with "strict" selected in the "enhanced tracking protection" section of the Firefox settings. To my knowledge, this section is meant to prevent known tracking domains from setting cross-site tracking cookies(among other things). This catches well known 3rd party tracking cookies mostly every time when visiting various websites(e.g. websites with Stripe payment integration, adtech cookies, etc).

However, whenever I do a Google search and click on the link I want, 3rd party cookies from Google are default-allowed through my Firefox enhanced tracking protection, despite being the de-facto tracking cookie on the internet. I was wondering if anyone knew the reason for this?