From the PoV of American's ruling plutocrats and military-industrial complex, Ukraine is a distant proxy war. Sure, lots of national security folks and petty idealists want to "win" Ukraine - if nothing else, the RoI on having that conflict going poorly for Russia is looks great (for America).
Vs. a serious attack on Starlink is a direct attack on both the business of an A List American Plutocrat, and on America's extremely advantageous/pride-and-joy dominance in space. Nations with plutocratic ruling classes have a centuries-long history of fast and violent reactions, when those folks feel that their business interests are being targeted by nasty foreigners.