Starting June 2024, adblockers such as uBlock Origin and many other extensions on Chrome will no longer work as intended. Google Chrome will begin disabling extensions based on an older extension platform, called Manifest V2, as it moves to the more limited V3 version.
As far as I know, the plan for Manifest V3 only included removing blocking from the WebRequest API and extensions using WebRequest could still see whatever activity they are given permission to view.
Wouldn’t loading the ads impact performance moreso than loading them? Not really a browser nerd so no idea it just seems like blocking a piece of content from loading outright would be less demanding than loading it.