I mean I haven't done the research, but I think you're implying they didn't. To say that the word "religion" in the first amendment only applies to Christianity or specifically Protestantism though, seems super far-fetched. I mean the Supreme Court unanimously concluded that the Church of Lukumi Babalu Aye was included in the First Amendment so...

But hasn't the Supreme Court interpreted the first amendment to include Islam?

You think the Framers didn't know about Islam?

It sounds like he thinks everyone should be able to vote. He's also saying that your opinion is so retarded that it almost makes your opinion sound good because it means you wouldn't be able to vote.