Ngl Taiwan is fucked no matter how you split it, the silicon shield wont hold as the cutting edge isnt a far cry from the last few nodes these days and capacity is ramping to across the world for high end nodes. It would cause quite a bit of distruption but you'd be talking 2-6 years rather than multiple decades as it once was.
And frankly Chinese military hardware seems to be up to snuff as opposed to what we've seen from Russia (see export varients murking a rafale in the hands of the Pakistanis).
The J20 & J35 are also very potent air platforms that can likely go toe to toe with western stealth aircraft and China has sorted their stealthy engine issue as well so they'll almost certainly be competitve in BVR engagements.
America likely could try and tango in the straits and local seas however I simply do not see a carrier group faring that well against a extremely heavy land launched missile barrage along with the fact that the American public psyche simply isnt up to handle the losses you'd see in such a conflict.
Breaking the containment island chains is important enough to China that they will be happy to very heavily commit in a way that no weatern power will be able to.
NATO doctrine also relies heavily on air supremacy which frankly I don't see them being able to maintain in such a conflict especially considering China would be operating in their own back yard.
China has also been building up their naval capacity for exactly this conflict for over a decade now (you'll often see quite a bit of cope over vessels being for coastal operations and not blue sea operations which is a bit of a... no shit? Thats the point?). Generally said vessels are quite capable and also significantly newer than the bulk of the US Navy & although we've yet to see the PLAN actually be involved in signficiant operations they're highly trained and war gamed.
The actual Taiwanese military as well is pretty anemic, has had severe sustained recruitment issues for years now and isnt exactly operating the creme de la creme of assets let alone in the quantities to fend off a attack.
Taiwans ""MAD"" plan of thunder running the three gorges dam also seems like a pipedream, there is zero chance that area wont be absolutely saturated with modern SAMs.
China can also just grind global trade to a halt through messing with the current shipping channels as a bargaining tactic to prevent external intervention.
TLDR: Taiwan wont exist in a few decades, there is no conceivable way China can be fended off from taking it.