The Ukraine doesn’t decide shit. The military, and financial backers of NATO, i.e. the United States, decides if they want in. And the only reason the US would decide to let Ukraine in at this point is if the US wants to fight WWIII, rather than just a proxy war.
People care(d) more about Taiwan due to tech and chip manufacturing that US industry is dependent upon. It’s not about Taiwan’s sovereignty, it’s about US domestic security. That ship has all but sailed at this point, we just need to ensure manufacturing is coming online as quickly as possible.
With the invasion taking place at our southern border, and the grip the CCP has on a large number of high ranking politicians in this country (as well as the social/educational war they’re waging with apps like tik tok), we should be looking inward and not giving a second of thought to guarding the sovereignty of Ukraine.