I would avoid saying “lesser evil” for critical support cases, because revolutionary defeatism exists for lesser evil situations where nothing is progressing against the primary contradiction. It’s more a recognition that a shitty thing can be progressive/forward moving relative to its opposition. Russia winning/getting a peace deal with Donbas and Crimea out of Ukraine gets us much closer to ending global imperialism than Ukraine getting it’s land back or worse.
I would avoid saying “lesser evil” for critical support cases, because revolutionary defeatism exists for lesser evil situations where nothing is progressing against the primary contradiction. It’s more a recognition that a shitty thing can be progressive/forward moving relative to its opposition. Russia winning/getting a peace deal with Donbas and Crimea out of Ukraine gets us much closer to ending global imperialism than Ukraine getting it’s land back or worse.