When USA stole assets from Cuba and Venezuela, nobody minded. After they stole from Russia, everybody eyes opened.
Arguably, though, the US has been "stealing" (in the form of sanctions and frozen assets) from other countries going back more than a few decades, at least as far as Iran in 1979, so your timeline doesn't hold up.
"Stealing" is wordplay when it comes to Russia because they are at war and the things that are "stolen" are assets being frozen to help pay restitution for the war they started. And Russia would deny the oil stolen from their ships was theirs because the entire point of the "shadow fleet" is to obfuscate ownership, mix and match the fluid products, to create plausible deniability to avoid sanctions.