On the first point, I won't argue. It's very subjective. I used to find value, now it's just an attention drainer for me.I, too, used to frequent PRSI and no longer do because I now find it toxic. However, I cannot agree that it should be closed, for two reasons. First, many find value in that forum, even if you and I no longer do. There are lots of thoughtful people there who share their opinions respectfully, even if there are many others who are don't meet that description. And second, keeping PRSI means there is a place in which those discussions can be cabined. Without that section, people are still going to want to discuss those issues, but they will spill more into the main forum, which would be bad.
On the second point, I'll argue against it. While some politics or social issue will enter virtually any discussion (esp. those about art), removing PRSI will remove pure political points. While we might argue if the next David Lynch movie is about some sort of political statement, threads like "Trump is a Russian" or "Biden's bad Political Agenda" (let alone various conspiracy theories, or just pure insults) will not find a home, which will make posts and threads way easier to moderate.
Example:
Non PRSI thread:
"Have you seen the last movie?" "yes, it was clrerly about social justice" "yes it's a good thing" "no it's not because of this or that" "what??? your side did this!" (bolded easy to moderate, political and off-topic).
PRSI thread:
"This movie is about social justice" "yes it's a good thing" "no it's not because of this or that" "what?? your side did this!" "Trump" "Obama" "your fault" "no yours" "his fault" "In 1855 the Republicans did this" "In 1856 the Democrats did this" "Trump" "it's not true, Obama!". and so on. (Impossible to moderate because it's all on-topic.)