I disagree, Putin illegally occupying Crimea is an ongoing illegal act that Ukraine had to suck up because they were too weak to challenge it. They got stronger, in part because Putin has wrecked the Russian military, and now its back on the table.
There's no "it cannot be discussed" and "its an escalation because we drew a line under it" thats Homer Simpson level logic and its garbage.
The pragmatic case is might makes right: Russia lacks the might right now.
The legal case is under international law Russia needs to GTFO now.
The doomsday case is 'they will nuke everyone if we done construct a win for them because Putin promised everyone".
Its a little bizarre that the regime claiming "Nazi jew sorcerors need to be expunged because their ethnicity doesn't exist" should be awarded land "coz its been ten years, c'mon! And they really want it". There's no magic in the number 10.
Russia started this war. They may have lost it before it begun. Its not for the US to make up for Putin's shortfall in ability. Its not up the US to police Ukraine's desire for revenge beyond the minimum of restraining outright war crimes. Russia might count itself lucky if the US exercises such restraint.
So far the actual escalation has been more and more assets thrown away and older and older tanks rolled out. Zero nukes despite endless red lines. Its not escalating.
Are you arguing "this time he really really really means it"? Thats a garbage argument.