alt Hacker NewsMy suspicion is that things like URL previews, or when the app calls a handler to open a link (YouTube, browser), are still monitored.
So e.g. opening a link to an Amazon product that a friend sent makes you a target for ads in that category.
It's a suspicion, they'd probably argue their EULA allows this. The typical "we have to monitor links for dangerous content" is always the standard bullshit.
This is indeed a common vector of privacy leaks on either the recipient side (to the sender, in this case, if they operate the target of the link for which a preview is being rendered) or to the platform provider (if the preview is rendered server-side). But last time I checked, in WhatsApp, URL previews are rendered exclusively on the sender side and then sent as (E2E encrypted) media to the recipient.