Honestly I believe that if US wants a "war", at this point, it will go through the Philippines.Well if you have been following the Ukraine War, the Anglo plan has always been to supply weapons to some dumb idiots who were willing to do the dirty work for them. The Taiwan and PH plan should also be similar. If there is a hot war between the PH and China. I anticipate that the Anglos, along with Japan, SK, India, and the DPP separatists in Taiwan might line up to "donate" weapons and cash to the PH to fight China. They wish to bleed the PLAN in anyway possible with their weapons in Filipino hands. Very likely, they might send in mercenaries, advisers, volunteers, and even rebadge their servicemen into Filipino uniforms to do the more sophisticated fighting. They definitely desire an opportunity to see their munitions, missiles and drones being used to hurt PLAN vessels, aircraft and manpower outside of a direct war with China.
That should be the cynical Anglo plan. But how it'll fare out in reality will be very different from Ukraine. Its primarily naval warfare instead of land warfare, the Filipinos are not Ukrainians, ASEAN is not NATO, and China is not Russia. This time, any blowback to the Anglos will really hurt.
An attack on Taiwan by America is way more escalatory, and barring massive, unprecedented social changes in China, such a war will never end no matter how well America performs, it can only end in American forces being routed or nuclear annihilation.
Chinese aren't gonna give up their populated homes when they really well equipped with weapons and backed by the largest economy and industry in the world. In contrast, if a war over the Philippines grow costly enough, it is at least conceivable that China may retreat, as US did in Vietnam.
However Philippines is still a very weak country. In Asia, the only countries that are Ukraine level are Japan and NK, maybe SK. Everyone else is way weaker. And China itself is also far beyond Russia to the point where it's unclear Japan would survive a sustained air campaign, even if Japan's combat capability likely equals or slightly exceeds Ukraine's.
Supply lines in Asia are also much more difficult for America, every country in East Asia can be totally blockaded by China, and even Philippines, Indonesia and Malaysia, while US can access them with sea routes that China wouldn't always have a physical ship presence in, China will still attrition any logistics attempt by sustained sea attacks.
I can see them crazy enough to instigate a war between China and the Philippines, but China itself wouldn't object to such a conflict either, they can bring Manila under control and start a new chapter in China's progression towards unipolar power.