They are not incorrect. You are stating your opinion, and an opinion that appears without much merit.
You're not being given my opinion, but rather my insight into policy decisions and the history of those decisions, and what I've experienced as a moderator here for ten years and an admin for eight. The opinion I gave is father down in my post, where I say that the staff doesn't always agree on the best solutions for PRSI, and I personally see merits in all sides of the discussion.
Your first point about "bleeding" just doesn't make sense. Admins/mods can continue to repeat that mantra over and over again, but it doesn't make it any more true.
I see from what you write that it doesn't make sense to you. We'll have to agree to disagree: it doesn't make sense to you, and it's one of the reasons we feel is important from our experience.
Your second point about "extras" also doesn't make sense... it's not even clear what rationalization you're trying to invoke here. Not counting them towards total posts is DEVALUING those posts - that's whole point!
My point is that while this is a tech site, we've seen as it's grown that users who get to know each other here want to be able to discuss issues other than tech with each other. In that sense, the PRSI section is an extra service for those users who want to be able either to discuss politics in general, or political aspects of tech stories and rumors.
You can either agree or disagree or not have an opinion that PRSI posts should not count, but there's no getting around that not counting them is devaluing them.
You clearly feel that political posts that don't count toward a total post count = an attitude by the site owner and administrators that those posts are "devalued" in some way. That's your assumption and opinion, which of course you're entitled to. We however are trying to tell you that that's not the way we see it.
Finally, if you see "vileness, trolling and lies" or "sickening" posts that break rules, please report them. Tens of thousands of new posts are made every day. We are helped greatly by post reports.
Keep in mind that posts you find "sickening" may not actually break a rule. In those cases, there are two ways forward. The first - and of course most frustrating - is that you might need to work on letting those comments pass. If however you would like to suggest a change in the rules or how they're interpreted, you can start a general discussion in Site and Forum Feedback. If you want to point out specific problems/moderation, you can send you suggestions via the Contact form. We've made numerous rules changes through the years based on user feedback.