4 years is an acceptable timeline. We are not taking about software product roadmaps here. If you consider the amount of time and time and effort it took apple, amazon to come out just with chip designs, this is reasonable. While its true that tsmc “3, 4 nm” are ok track for 2022.. its debatable if that naming means what it actually implies. Also tsmc had priority access to euv solutions this time around.. lets wait and see if Intel can deliver before passing judgement outright.