I appreciate that you are trying to keep a nuanced view of things and not trying to support an 'enemy of my enemy is my friend' mindset. Unironically, I absolutely agree with your stance regarding not supporting Nazis even when a common foe is about.
However, as outlined, Azov is, at this point, not much more than an ordinary Ukrainian National Guard unit with a sordid origin and a very questionable symbol it's retained from that, not unlike the symbol of Finland's air force.