I guess in the same way that using a higher-level language than Assembly is "cheating." I'm not sure if you're referring specifically to the Sync feature (which is still largely frowned upon) or more generally analyzed beatgrids, BPM readouts and Master Tempo (which keeps the pitch in tune when you change the tempo), but the vast majority of practicing DJs today are not needing/using the old school vinyl beatmatching techniques.
Call it whatever you want but you're going to be incredibly hard-pressed to find anyone that can mix as smoothly on vinyl as someone decent with CDJs. Sure it's a cool dying art and analog and all that but at this point virtually anyone trying to play vinyl out is sacrificing the listener's experience for cool points (including the physical issues with reproducing sound from delicate machinery in a chaotic environment).