> Then we had about 20 years of politicians who thought the soft power stuff was all you needed
Actually, about 9 years. Then Afghanistan happened, followed by Iraq. Hard power was back baby!
> The security concerns haven't changed, but the way of dealing with them has.
The security concerns were never there to begin with, unless you mean the security concerns of Israel. With the US as the hegemon, it is in the US's interests to maintain the security of key trade corridors, the most volatile and important of which is the Hormuz strait (arguably even more than the Suez). Post Iranian Revolution, every action of the US has only served against its interests, to further destabilize the corridor - whether it was funneling weapons to Saddam, invading Saddam 20 years later, not to mention the constant sabre-rattling against Iran throughout.
> I'm confused as to why Filipinos are protesting against taking out the Iranian regime; it's a direct blow to Chinese expansionism, as well as the jihadist groups in the south
Lol no. Getting involved with Iran means fighting a country that has every intention to bog down the US in a long war, at no cost consideration for its citizens. China loves the war - it's a repeat of Vietnam. China is literally dishing out intelligence to Iran and helping them skirt sanctions. Also Iran, which is Shia, isn't involved with the terror groups in Mindanao (which are hardline Sunni and funded by the US GCC allies).
> But America's taking out the weakest links in the Russian-Chinese-Iranian-Venezuelan axis
The weakest link in the axis was literally Venezuela - proximity to the US, a hated president, and competing factions vying for power. Well, at least before the US decided it was a dandy idea to kidnap Maduro.
> A short-term rotation away from East Asia doesn't necessarily mean it's a bad strategic move.
The Iran war is going to be anything but short-term, as the Iranians have stated. Even if the US wants to exit the campaign, the Iranians will not let them, and if the US decides to unilaterally stop bombing Iran, it leaves Israel open to the Iranians, which is something Israel and AIPAC won't let the US do.
The Asian allies know this, which is why everyone from South Korea to Japan to Philippines to Australia has been worried - because they know that this leaves fewer American resources for them. The US has already begun diverting THAADs and Patriots from SK to the Middle East because they've been depleted. The UAE was begging around for interceptors from Italy (at a 125% premium) and then Russia, because the US failed to provide for its "capable allies". The Gulf states internally already see the US, including US defence products, as unreliable in supply and are already moving to lock in deals with EU providers such as Rheinmetall.