China should be cautious about assuming Taiwanese would automatically defect, give up, or lose willpower to resist. Just assume they are diehard nationalists that will fight to bitter end, and plan accordingly. Go big or don't fight at all, all options need to be on the table.
Exactly.
Always be prepared for the heaviest and fiercest fighting and resistance from the Taiwanese side when planning for the reunification would be the best course of action for the PLA and CMC.
Compared to the current Ukraine-Russia War, I could see that Taiwan would be on several magnitudes harder for China.
Heck, I would even suggest China to put the nuclear option on the table, in order to intimidate Taiwanese leadership to surrender peacefully. I know this definitely sound really cruel to nuke Taiwan (which is equivalent to nuking China's own brothers and sisters), but China's ultimate goal is to reunify the island. China has no need for those anti-China diehards to stick around after the reunification is complete.
In fact, I would suggest those anti-China diehards on Taiwan who don't want to be under Beijing's rule to take whataever outbound flights available and leave the island before the war starts. At least your survival is guaranteed.
This brings back to the point - There is literally zero guarantee that the Taiwanese leadership, military and populace would give up and surrender so easily.
I would strongly advice those who expect that reunifying Taiwan would be a walk in the park to wake up and get real. I would expect the reunification operation to be a walk across a crocodile-&-snake-infested swamp.
Considering how hard is it for Beijing to combat the decades-worth of brainwashing damages that the British colonialists and the British-element-infiltrated Hong Kong government had done on fellow Hong Kongers before and after the 1997 handover, I find it difficult to believe that the Taiwanese would be softer than those brainwashed Hong Kongers at all.
Just take a look at the pages of history, especially the later stages of the Pacific War.
Notice how increasingly challenging and bloody the Allied forces' advance were across the Pacific as they get closer to the Japanese mainland (banzai charges, kamikazes, kaitens, you name it). Don't forget how adamant Imperial Japan was in refusing to surrender, even when literally the whole world was basically against them by late-1945. The Imperial Japanese leadership at that time was even ready to sacrifice tens of millions of her whole populace - All just to hopefully bleed the Allied forces more than the Allied Powers' own populace could ever accept.
In the end, it was only because of the "double-shock" (the atomic bombings and Soviet military operations in Manchuria) that Imperial Japan was forced to surrender.
Taiwan could be the 21st-century version of Iwo Jima, Okinawa, or even Operation Downfall for China. Therefore, the Chinese government, military and the populace must be ready for such avenue.
And as always, the PLA and CMC must expect direct military intervention from the AUKUS, Five Eyes and QUAD in the process of reunifying Taiwan as well.
In short, looking down on your enemy is always suicidal. It's always better to overestimate your enemy than to underestimate your enemy.