What purpose does it even serve? Why does Facebook even care or why does it have to be informed about my visit?
This ad business is crazy stuff. Lucky for me I have some blockers for things like this.
Most noble thing to do would be using server-side tracking/analytics but because of additional coding and losing access to Facebook analytics, most web sites usually don’t bother.
However, this would require a cost, in terms of refusing to do business with untrustworthy websites. Rather than accepting that as a fact of the business, websites/advertisers instead push the cost off to users as an externality. This cost is paid by the user in time/bandwidth (larger page load times) and privacy (ad trackers), even though they were by no means the source of the problem.