'...And I'm an Atheist'

[Tempus]

Sorry, I assumed the atheists here would be familiar with the basic terminology of elementary logic.

Why would you assume that You don't need to know anything about logic (nor science, religion or philosophy in general for that matter) to be an atheist after all.

Symbolic logic doesn't improve statements; it does make them more concise.

Although it doesn't really matter how concise a statement is if it can't be understood. I guess it depends on how wide an audience you want to reach. I understand some of the basics of logic, but I'm not familiar with much of the symbolic representation of it. What may seem simple to you will likely go over my head until I do some more looking into the subject.

I use basic logic symbols and terminology that high school freshmen should be familiar with?

Depends on the high school you went to I suppose. I've never had a compulsory philosophy / logic / critical thinking class before. The maths classes I had were often loud and full of distractions. You seem to be using your own experiences as a model for what others should / would know. It may be that they 'should' know, but the fact is many don't.

I thought people here liked reason and logic. I had no idea there was so much ignorance here on the topic of logic.

You're the one who's ignorant (how's that for provocative!) if you think that the people singing the praises of reason and logic necessarily know (or want to know) something about either.