You even say yourself that "we don't have an opinion yet about longer-term changes" and I assume you're hoping the experiment maybe helps you form that opinion?
While I understand the intent behind this decision I don't see it accomplishing anything worthwhile. It may reduce flamewars temporarily, but people get flamey on tech topics too.
It's a hell of a privilege to think that technology and business discussion can be separated from political discussion. Politics will constantly intersect with technology and business.
You're using a battering ram to hammer a nail.