It is a great approach for marketing teams. They grow, look good, claim to drive revenue, try to impact consumer behavior, but it all is dependent on Facebook's (insert any ad platform partner) attribution. So yeah, Facebook will not mess with its attribution. It would make a big mess for both its business and it's client's business.
Marketers's should measure the incremental impact of their marketing buys (get their data science team to manage the study). They will be surprised to see how much display banners or video ads are impacting consumer behavior. Stay away from modeled approaches, try to grade the reporting yourself.
> It is difficult to get a man to understand something, when his salary depends on his not understanding it.
"Facebook Clear History doesn't fully erase user data, information later sold to a group of Zombie Nazis bent on world domination."
> There’s a reason that Clear History isn’t called “Delete History”: Using the feature will disassociate browsing data that Facebook collects from your specific account but it won’t be erased from Facebook’s servers completely, Baser said. Instead it’s just “de-identified,” which means it’s stored by Facebook but no longer tied to the user who created it.
"Why can’t Facebook just stop collecting your browsing history entirely? Well, it could, but a large part of Facebook’s business depends on collecting this kind of browsing data, so it would cripple a big revenue stream."
As long as Facebook's business model involves monetizing your data, they are going to slow walk any feature that might impact this.