1. Snowden materially damaged the US government.
2. Snowden swore an oath of allegiance to the entity who most desires to damage the US government.
I cannot blame someone for having trouble finding the nuance and having trouble reconciling that.My personal opinion is likely closer to the idea that Snowden was a ethical person who wanted to do good, and he was handled as an asset by people who knew how to manipulate a desire to do good to achieve goals like chaos and distrust. That is a casual opinion, not informed by facts or significant research.