If my theoretical approach causes people to leave, that’s OK.

Right, but that will also mean that the community will no longer be “big”. That’s my point.

If mods started going as far as deleting threads on the basis of “this discussion is already beaten to death and is not bringing anything new”, you can bet that this will be taken as an act of “censorship” and will cause everyone to leave to form their own factions - except maybe the ones that are aligned with the mods enough to understand the principles behind the decision.