isn't the point here that the sub-pixels being produced are so large that it would take a tremendous amount of artifacts to reduce them to an unreadable state?

isn't the point here that the sub-pixels being produced are so large that it would take a tremendous amount of artifacts to reduce them to an unreadable state? in other words; if YTs compression was affecting it so badly that it prevented the data from being re-read, wouldn't that compression scheme render normal video-watching impossible?