Idolatry in the Camp?

 The following by Steve Katsara:

I used to admire the "holiness" preachers - their sermons were strong against sin, iniquity and falsehood. They we're not afraid to be straightforward and expose those who taught/lived contrary - and their efforts were driven from what the bible "says". Yet all of them believe/affirm the doctrine of the trinity and the deity of Christ ... Is this not an error? Is this not falsehood? Isn't worshiping, praying, obeying to the trinity sin? What's the use in being strong against lies, sexual immorality, drunkenness, violence, foul language ... when there's idolatry in the camp?!?!? God judged/destroyed Israel in the wilderness, not for any other sin except idolatry (ie. see the golden calf). 

It's easy to speak against what 's non-controversial - but preacher friend, if you're a Trinitarian, you've already broken the 1st commandment! To everyone else who listens to these preachers - how different are they from "prosperity" preachers?!?!? They all still embrace this gross error.