Webkit ITP is Apple's way of trying to "balance" the interest of advertising platforms (which it also has) vs the interests of Safari users. Thus, it still allows for some tracking. As a user that is hostile to tracking and profiling, I prefer the more aggressive solution of blocking the tracking cookies altogether in the first place, and preventing any tracking. Thus, uBlock Origin offers the ideal solution to me, as unlike ITP, it blocks all tracking cookies and even goes further by preventing the tracking codes from even executing (thus even preventing the trackers from using other methods that advertisers have started using to bypass ITP - https://resources.observepoint.com/blog/webkit-itp-analytics... ). Thus, I feel ITP is a pretty limited and inferior solution from that perspective.

(I also believe this feature was introduced to introduce another vector for data collection of browsing data of its users that don't use Safari on iCloud - while ITP does run on the machine, it gave Apple a good excuse to initially collect cookie data from all users to analyse it for ITP modeling - Apple does collect data "to improve its services". Honestly, I am just very cynical about Apple and other BigTech when it comes to my privacy and data.)

Good to know that WebExtensions API has been ported to Webkit by the Orion team. It needs to be seen how they've implemented it though - even Chrome supports WebExtensions but we all know how Blink has been modified to cripple uBlock Origin and other adblockers on it.