That is not what meta is for.
If you just want to voice an opinion that you are scared that will not hold up under a fact based analysis and debate then don't post it in meta full stop.
Why would anyone wish to preclude fact based relevant information being presented?
Does not matter. As I said, local rules are there for a reason. If someone owns a thread and they don't want to hear from you, they have the right to not allow you to post in that thread. Create your own thread if thats an issue.
Don't agree.
This stops one sided and incorrect theories and assumptions being presented as accepted facts to other readers that could not discern they were perhaps groundless nonsense by themselves.
The mods will use sensible discretion to enforce them.
Present a case of having such a thing in meta bearing in mind persons post only on topic, factual , and relevant information.
Are you saying you want to provide an environment where what I have described above can take place?
Mods discretion which I think should be analysed and explained if required. The deliberate moderation and censorship of relevant on topic information should be in extreme cases only. I see no possible use of such in meta but perhaps on a sales board where you can not have self moderation for scam reasons but want to prevent lower ranks bidding on your items.
Local rules are not up to the poster to enforce only a mod at their sensible and explainable discretion.
Local rules are really a request to mods NOT rules that are enforced just because they have been written.
If someone is complaining about fact based, on topic and relevant posts being made in their threads then you really need to worry about their reasons for that.
I don't think you can say what a moderator will do.
I would hope they could answer why important, relevant and fact based information had been deleted - that would be highly net negative.