China certainly has all the ear marks of a country willing to sacrifice a generation to capturing Taiwan. And we don't want to underweight how hard China can hit Taiwan.
Taiwan's poses a great logistics challenge of amphibious invasion for a non-expert country. D-Day in Normandy was a marvel that came at the end of a steep learning curve for the Allies that benefited from strong US and British naval traditions as well as institutional experience in the Pacific, North Africa, Sicily, Italy, Dieppe, various commando raids around the periphery of Europe and even the experiences of Dunkirk and Gallipoli. If China can overwhelm the Taiwanese, US, Australian, Japanese and maybe British air forces they will have done quite a bit of work.
China's missile though probably won't have such terrible accuracy as the Russians have though. There are technical reasons for that.
Another thing that will impact combat if the US and China are fighting over Taiwan's airspace is that both will be fighting globally over Space. You won't have as many channels on your cable when all the sats are blown up.