If done by a majority of countries, it would greatly reduce the military threat of China invading Taiwan, because it would imply that those countries would not

If done by a majority of countries, it would greatly reduce the military threat of China invading Taiwan, because it would imply that those countries would not ignore an invastion or only protest inconsequentially, which is what China can currently assume rather confidently. Even the US has been very carefully not fully committing to a defense of Taiwan, giving China the impression (according to some reports) that they might get away with it if they just act quickly enough. Of course, none of this affects non-military threats to TSMC's production, like earthquakes.