and the response from the US is to send a dozen tanks in a year or so
Europe is wondering the exact same thing: Why are the yanks pussy-footing around? They're usually much more hawkish. The reason is that the US are shit-scared about Russia thinking the US is trying to invade by proxy or something.
The west is sending just enough weapons and ammo to prolong the conflict but nowhere near enough for Ukraine to actually have a shot at winning.
Europe is sending pretty much as much as it can without compromising its own defensive abilities. Have a look at the Baltic states, sending over as large as a percentage of their GDP as the US is sending as a percentage of its military budget. It's the US which has gazillions of Abrams sitting around doing nothing but collecting dust and is not shipping them over, not Europe.
And also unlike the US, Europe is sending long-range missile systems to hit logistics etc. in the rear so that Ukraine doesn't have to gnaw through trench lines.
Homework: Go through all your geopolitical takes and get rid of the term "the west" and instead actually be precise.