Well, it did not take two weeks for this nonsense to be exposed—just two days. It turns out that the US Department of Defense, at that very moment, was working to turn off as much of the remaining aid taps for Ukraine as they could—including the exact air-defense equipment that Trump mentioned. Last night the White House confirmed that the US was stopping some/all of the remaining (Biden-era) shipments of aid to Ukraine including crucial Patriot air defense systems (and other vital material).

This is a shopping list of much of the most important aid that Ukraine desperately needs to fight and without which many more Ukrainians will die. The nightly bombardment of Ukrainian cities will now be more effective for Russia, and the Ukrainian ability to strike back on the Russians will be lessened.
Just as a clarification—not only are the Patriots a crucial part of the Ukrainian air defense network, AIM-7 (Sparrow) missiles and Stingers are further key parts of the Ukrainian air defense network.
If Putin could write a wish list of the weapons he would want Trump to keep from Ukraine—this would be it.
The idea that the US needs these now is also a sham. Many of these weapons would be of dubious value in a war to protect Taiwan (and btw, the US is hardly planning for one I was recently told).