I think many people are unable to consider the whole picture. They want to ideally look at these things in isolation.
There's some set of [reason] the 'west' wants Ukraine to join NATO, and in theory, there's no issue with that right?.... but in reality, the consequences could be severe. It's silly to ignore the consequences when you've been informed upfront.
Most people wouldn't have any idea that it has anything to do with NATO, since the media is doing a wonderful job of misinforming. It's being pitched as 100% unprovoked aggression.