What I think is serious is the entire world kowtowing to China about Taiwan and not recognizing that it is a de facto country.
I support efforts to treat Taiwan like the country it is.
As I said, I lived through the continual saber-rattling of Cold War 1.0, to the point where I drank the Kool-Aid, joined the Air Force to fight Ronald Reagan's "evil empire" studied engineering, took RUSSIAN language classes for heaven's sake! And you know what? Nothing happened (and, no, I don't blame the Cold War on what is happening in Ukraine, that's on Putin being a nut-job). Eventually, the Iron Curtain was lifted.
So, no, I don't think China is going to actually do ANYTHING consequential if Pelosi visits. There will be a show of force, some missiles, fighter jets following her plane, whatever. Like I said, saber-rattling. Keeps all the military people on their toes and all that.
No one in Taiwan is concerned in the slightest...business as usual for them.