Just in terms of international law, the Chinese flights near Taiwan are provocative but don’t violate any laws. The U.S. and Russia still do this sort of thing all the time. An ADIZ is not sovereign airspace.
https://www.france24.com/en/live-news/20220805-chinese-missi...
That happened during the Pelosi trip in August, and the jingoists were angry it didn't go further. The likelihood of an effective air/sea embargo on Taiwan is more likely than an initial invasion.
https://www.cfr.org/councilofcouncils/global-memos/hague-tri...
The PCA "rulings" aren't international law because UN (which PRC accept as international system) has no formal position on them / has not adopted any parts of the decision. Ergo, PRC's SCS position is consistent with international law - like the actual one at UN, not make believe US "rules based order" which was behind PCA lawfare campaign and the ongoing propaganda.
PRC is more firmly within bounds of the "world system", versus US who tries to enforce FONAPs despite not ratifying UNCLOS, and doesn't respect the kind of international law that it accused PRC of violating, see ITLOS ruling (an actual UN ruling) regarding UK/US military base on Chagos/Mauritius/Diego Garcia.