You think that because you probably have no clue what this means. Destroying these chip foundries would result in many hundreds of billions of dollars in damage and no guarantee of recovery. The chip foundries are what makes Taiwan so attractive as a target. Remove the foundries and there is nothing there that cannot be found elsewhere.
As a note, a modern chip foundry costs upwards of 30 billion dollars to build and requires a minimum of 5 years to do so. Destroying these foundries would result in a world-wide depression just based on all the electronic devices that use them> Cars, boats, guidance systems, radar, sonar, etc. consumer products like televisions, refrigerators, microwaves, dishwashers, and obviously computers. TSMC is the largest foundry at this time by a long shot, is based in Taiwan, and they are currently building additional foundries because they cannot meet demand. So, imagine having so much demand that you invest >100 billion dollars into building out new facilities to help you meet that demand.
In other words, your assessment is entirely wrong. This is a policy that has teeth on the level of nuclear weapons and the worldwide impact would be devastating.
...W.I.S.H.F.U.L...T.H.I.N.K.I.N.G...