That’s understandable. It’s important not to let neocons use antipathy towards Hezbollah to cause sympathy for al-Qaeda/ISIS, because the two are fighting each other now. When people try to push a “Hezbollah is the biggest threat” right after an al-Qaeda/ISIS terrorist attack, you know that person has an ulterior motive.
Actually, Islamic terror charities in the US have been known to simultaneously support both.
Contrary to popular opinion- which has a history of being wrong to the point of silliness - Sunni and Shiite can get along just fine when they find it convenient for attacking any mutually loathed third party.