And even if you get a beach head there(on the West side), it’s not Normandy, there’s sheer fucking cliffs, and then MORE mountains.
Idk much about Taiwanese coastline, but your wiki article states:
The terrain in Taiwan is divided into two parts: the flat to gently rolling plains in the west, where 90% of the population lives, and the mostly rugged forest-covered mountains in the eastern two-thirds.
Yeah beach is heavily defended on the west side. Over watching those beaches are cliffs, behind those cliffs are mountains. The east side of the island, facing away from the PRC is just all mountains.
US SOF have trained Taiwanese forces to basically evac as many folk as possible and for the Taiwanese army to take up fighting positions in the mountains.
Look to Afghanistan or Switzerland or Vietnam to see how that tends to work out for the invading forces.
There’s a map in that link that shows the terrain.
https://www.businessinsider.com/us-green-berets-explain-how-they-train-taiwan-troops-2021-10?op=1
Note take special care when researching this as the Taiwanese minister of defense was misquoted earlier this week. Taiwan still only hosts rotating SOF when PLA exercises are active and the US and Taiwan have their joint training/exercises. There is not and hopefully will not be a permanent US base on Taiwan.