Why? Because they are outdated, malforatted, unhandy, crowdy, don't help anyone, etc. There is simply much more work to be done on those pages than we have anyone willing to do. Also, all of them do exist in a much better, more detailed and pictured version on portforward.com.
What exactly? All pages of the English Wiki that describe the setup procedure of a router or a group of routers (port forwarding etc.)
mfg,
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