I apologize in advance because I know my question will sound silly to some (but there must be many others with my same question in mind): why the old thread has been closed to open a new one?

Not because of quarreling, because the same people who quarreled there can quarrel also here and anywhere else.
I don't think it's a problem of overflow (unless the platform can carry up to a maximum number of posts per thread).
Then what?

Anyone can advise?