If it is true that this option as a viable alternative for Pelosi to land in Taiwan means that the US really wants to change the status quo of the past, the problem is that this can trigger many variables that the biggest one implies an all-out war between China and US.
Well, I agree that China should not respond by taking the downing of Pelosi's plane as a measure, that would mean an eventual US intervention, either directly or indirectly, with all the viable options they have and I don't say that just in the military options , but also beyond that. The implementation of the No-Fly Zone would inevitably be a war against Taiwan, because all ROCAF jets would also have to be shot down, which I see no point in this unprecedented escalation, nor do I see such recklessness coming from the Chinese political leadership.
This news, if indeed the option the US is willing to go for, means that the PLAN/PLAAF option to respond on a large scale could lead to unintended results that would be dangerous and would set precedents for further escalation towards a war.
I think the PLA would really react strongly against Pelosi's plane landing in Taiwan, the problem is that I don't see her downing her plane as an alternative that can be considered by Chinese politicians.
A large scale exercise would be the most viable option, this exercise should take place not before Pelosi's plane lands in Taiwan, but after landing, depending on how many days she stays in Taiwan, the PLA should send dozens of aircraft into ADIZ. from Taiwan in protest of Pelosi's visit to Taiwan, the sound of jets around Taiwan - a small island, I have no doubt that she hears the jets passing by at some point which would cause certain apprehensions in her, the same thing took place in Kiev when Scholz and Macron were with Zelensky at an open-air conference and they heard a boom from the sky, I don't forget the photo showing their terrified reaction. Surely this would send a signal to the American political leadership.
Even if the US sends aircraft or a CSG to CAP as a way to protect Pelosi's plane, they cannot prevent the PLAN/PLAAF from carrying out exercises in Taiwan's ADIZ which also includes part of China, the same situation as the US response form. China is worth it here because Taiwan's jets would have to take off. This option being considered by the US to carry out CAP, I have no doubt that the PLA's response would be exactly a large-scale exercise because China always reacts in the same proportion.
It is worth remembering here a recent incident as a form of response from China, when the U-2 was caught spying on the PLAN naval exercise in the Yellow Sea in 2020 in the month of August, China fired ASBMs in the South China Sea sinking a ship . China always responds in kind, if it is sanctioned, China sanctions it, if opponents carry out some military maneuver in the South China Sea, China reacts in the same proportion, this happened in 2020 with the firing of ASBMs.