I think that is just a fundamentally one-sided understanding of why the Minsk Agreement failed to be honest. It was a poorly-written, unimplementable deal that neither side took seriously. It’s not like the D/LPRs and Russia were saints here. Indeed, there also isn’t much reason to believe the D/LPRs were, beyond the first year or so, really representative of the people in the region’s desires, since the original independent-minded leaders were replaced by those much closer to Russia. FURTHERMORE, the Minsk agreement was simply too unpopular in Ukraine for any government to survive implementing it. Ukrainians largely viewed the D/LPRs as Russian proxies (to what extent they are is arguable, but they certainly were less so as time went on and never were even to start with) and, in large, abhorred this sort of Russian influence.
It wasn’t just because Ukrainian state was war-mongering and poor baby Russia was forced to step in. This is not to say at all that the Ukrainian Government made no mis-steps in the build-up to the war-yes, they definitely did, and the Ukrainians simply didn’t believe Putin would be rash or stupid enough to launch such an invasion until very close to the time so never really backed down from a maximalist NATO position and didn’t prepare properly for early-war defences. But it’s not like you are saying. Both sides caused the failure of Minsk, and neither side was ready to adhere to it.