I will not be surprised at all if something like this will be soon used to circumvent adblockers replacing classic javascript based analytics on the "bright" side of the web.
AdBlockers will still block iframes and already does. Those I've seen blocks the full request based on a list of known domains. Many 3rd-party tracking cookies is often placed with help of iframes or a img-pixel.
With Google Analytics you have the option to actually do all the tracking server-side so AdBlockers shouldn't be an issue tracking-wise.
With Google Analytics you have the option to actually do all the tracking server-side so AdBlockers shouldn't be an issue tracking-wise.