This seems more like a complaint than a question, but the "Alternate timelines" section of the Warp factor article on Memory-Alpha says it was meant to suggest the warp scale had been recalibrated (such a recalibration also happened between the original series era and the Next Generation era):
In the October 1995 issue of OMNI, science advisor Andre Bormanis
stated the idea of warp factors beyond 10 in the alternative future
was in a recalibration of the warp scale, as ships had gotten faster.
Maybe warp 15 was set to be the transwarp threshold instead, according
to Bormanis, and warp 13 in that scale would have been the equivalent
of warp 9.95 of the previous scale.
According to Star Trek Encyclopedia, (3rd ed. p. 555) warp 13 from
"All Good Things..." may also allude to some type of implementation of
the Federation transwarp drive technology from VOY: "Threshold".