Do you think there's too much unnecessary threads in this forum?

While I agree that there may be threads about the same stuff, the easiest way is to tell the mods with the report button about it and point out why it is the same as another and ask them to merge or close it.

Of course this demands that people can actually prove that it is a copy and not just something they don't like, so I don't expect many people to do it.

And we all know that even if you got 100% "yes" here, it will still be more threads.