The definition of madness would be continuing to incur the extra expense of running nearly empty trains every 15 minutes.  You think United and Southwest do that with their airplanes?  Of course not.  They deploy their (costly) resources to fit demand.  You're lucky they only made these minor reductions in service rather than the much bigger one that the cuts the data actually calls for.

You're also lucky you don't use the B-Line, which only runs every 60 minutes outside rush hour.