It's not just the amen and awomen thing that is offensive. It's angering and retarded, but what was even worse was what came right before.
"we ask in the name of the monotheistic god bhrama and god known by many different names by many different faiths"
Bhrama is the "creator god of Hinduism"
The Bible talks about how when people worship idols and other "gods" they're really worshipping demons.
So to boil down what he did, he quotes the Bible in the first part of his prayer, then ends it with essentially giving thanks to demons and crediting creation with demons and then ends by bowing down to the alter of progressiveness with the amen and awomen thing.
This is like when ancient Israel would allow some Cananitte "religious practices" into their culture. God took that very seriously. All sin is serious and I've got no room to be self righteous because I screw up often, I'm just saying that leading and teaching others to worship other gods like this is a really weighty thiing.
As a non religious person, it also offends me. Imagine if someone in the leadership of saudi called prayer in the name of bantu god ng. They wouldn't make it out of that mess alive.