The mediums allow for different styles of expression. As others have mentioned, a beat-matched set tends to have a bit of a more organic/live feeling to it vs the very rigid mixing of an auto-synched set. If one is better than the other is up to the listener and it's an opinion and not a fact.
Beat matching takes one element out of mixing a set, but does not entirely replace the human element.
The only benefit that comes from the vinyl vs digital debate is giving electronic music message boards a never-ending topic to debate on and keep a steady stream of traffic to the forum
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