As stated, posts have been hidden due to community flags reaching a sufficient threshold according to discourse’s scoring system. Those posts were, at best, unhelpful, and this is community moderation. I’m glad you agree.
The moderation team does review those flags, and can reject them (and take other actions) when it appears they’re being misused. Again, as stated, when it starts to look like people are taking sides and flagging things they disagree with more than things that are inherently problematic, that is a good sign that the discussion as a whole is not going anywhere productive.
Slow-mode is then an interim step before closing the thread entirely. It was a choice, and in this instance I opted for that interim step, rather than a full closure. This is not a permanent state. If and when the thread is closed, it might also be relisted, if there’s some view that the remaining content has particular value for the historical record.
You’re free to disagree with these decisions. I moved the discussion of those decisions to this category, as per the policy, and they have been explained. You’ve stated your problem clearly enough. I agree there is no point in arguing semantics further.