Reminds me of when Biden was standing next to the German chancellor and said he'd make sure Nord Stream would be stopped if Russia ever invaded Ukraine and then when Russia invaded Ukraine and Nord Stream was blown up, everyone just ignored it.
Look at the incentives and consequences of blowing up TSMC if China uses the military. China would not have access to the high end chips; Taiwan loses a bargaining chip of its own, and would suffer a huge economic cost (a lot of electricity is used up by TSMC alone); and US is the one who gets to point at the big bad PRC throwing weapons at ROC, and know that PRC gets a road block on the semiconductor front.
In the end this is a matter between Ukraine and Germany and nobody cares what Russia thinks.