Or, is it more that you feel it ought to be acknowledged that the US and UK are not without some blame for the war on Ukraine? If it’s the latter, when the country asked to join NATO, the answer was ‘no’. So Putin did not have to declare open war on Ukraine a country with long roots of its own culture, language and people.
Ukraine joining NATO wasn't the only issue here. There is the question of the long history of the intertwining of Ukrainian and Russian history, with Ukraine a western province of the Russian Empire for centuries with a huge amount of cultural, linguistic, and political merging over those centuries.
The argument about long cultural roots, language, etc doesn't wash in the case of the Donbas and Russophone regions, as far as Russia is concerned. In the past decade, a policy of Ukrainisation has been conducted by the government, greatly diminishing the rights of Russian speakers (the majority in the Donbas) to use and enjoy their first language.
Look to the continued Westminster justification for the existence of Northern Ireland for parallels to Russia's logic here.