It makes sense that they would have to do this. After all, if westerners were to get it into their heads that this whole terrible war could have been avoided by simply solidifying a policy of neutrality for Ukraine and issuing a guarantee that it would never be added to NATO, they would begin asking why this did not happen. NATO powers had no interest in adding Ukraine to the alliance anyway, so it doesn’t really make sense to refuse to make such low-cost concessions if the only alternative is mass military slaughter. I mean, unless your goal was to provoke mass military slaughter to advance your own geostrategic objectives.
So they work hard to present the narrative that the invasion has nothing to do with NATO at all, and occurred solely because Putin is an evil madman who hates freedom and wants to destroy democracy. Most western analysis goes no deeper than this.