I disagree, terrorism, as defined by the US government includes more than muslims.  There is a reason they said that if you believe in the US constitution, ever served in the military, use ham radio or internet chat and a whole bunch of other things you might be a terrorist.  It is basically anyone the US gov disagrees with or is unable to politically control.  

Further jihad answers the "why" question where terrorism answers the "how" question.  You can be a jihadi without being a terrorist and you can be a terrorist without being a jihadi.

The reason this is on-topic is because of the claim of terror funding.  Was it specified if it was domestic or foreign terrorism?  For all I know he was helping support one of the activist groups (ELF is listed as a terror organization), militias (some but not all are terror orgs some just do the more historical role), or perhaps some other crazy group out there somewhere in the world.  

I ask because while there are things mentioning ISIS there are also a lot of conclusions people have jumped to and I did not know what was factual and what was speculation with the ISIS ties.