Charges were dismissed on a procedural factor and NOT on the facts at hand.
You're confused, that was a separate case from a 2014 standoff in Nevada.
What happened in Malheur went to a jury and all 12 voted not guilty.
Not guilty in a legal sense does NOT mean a crime was not committed, and that he's not a domestic terrorist. He's just one that was not convicted.
In the US, "domestic terrorist" is an actual legal term with a specific definition (which Bundy doesn't fit).