There is no need for another subforum. The problem, which was 100% predictable, is that the moderators, for whatever reason, are no longer rigidly enforcing the very clear Off Topic Post Guidelines, specifically "Political and religious posts will be deleted". Until recently everything was fine and visitors, especially commercial ones which Don wants to attract, got to see thread after thread of members helping each other with machining or some other practical topic. The folks who think exercising their Freedom of Speech is bickering and turd throwing got confined to MA&E.
So loosening the enforcement of that has caused exactly what you have seen. Just like if the speed limit is 55 and it is rigidly enforced people will drive at 54. If no one gets a ticket unless you are doing 70 or over, people will drive at 67. Unless they see an accident with 8 police cars present and now a fair number will drive at 75-80 because they think there is no one to enforce the rules for another 20 miles.
Suggestions? Sure, just have the mods go back to the previously well enforced rules. Then new folks will come here, think "Hey, this is a great place" instead of "Hell, this is just like the comment section on Yahoo News".
Steve