A red line is in general a weakness because gives your adversary a fixed target on which to focus. I see one actor aiming to escalate Taiwan situation in an Ukraine scenario one and another actor really worried by this possibility....guess what? These 2 actors are not the ones you might expect.
US dream would be to make China a pariah state and to reserve to China the "Russia treatment". China at the moment barfs (no disrespect, read later) a lot about Taiwan, but? What it really means? We use to say "the dog that barfs does not bite"
According to Intel plan, after 2025-2026 Intel will gain tech capability to replace TSMC, and at that time TSMC will have also built a US fab. At that point the "collateral damage" for US to escalate Taiwan even to a war, will be much lower than today's. Actually knocking off the entire Taiwan IC manufacturing could be even a good thing for US in the long term.
US is the master of brinkmanship (
), and they can wait: they started NATO east-expansion in 1994 (
after) and coup changed Ukraine regime in 2014, installing a pro-NATO one that pushed the tension until Putin made (in my humble opinion) his life's biggest mistake in 2022.
I would not be surprised to see US to escalate tension in Taiwan hard after 2025 (just in time for the new US administration).
I really don't know what Taiwan people think of their future. I'd guess they are not blind.