Yes, he was probably referring to creativity and originality in those ancient games, and maybe the pleasure watching these games generate in comparison with the actual ones.
This can be true, but the quality of GCT chess games is far higher than the ones played in Zurich (which is natural due to the lapse of time).
I was just listening to the Perpetual Chess Podcast, and I heard an interview with Andy Soltis talking about the famous Zurich 1953 Candidates tournament. Referring to the actual quality of the games in that tournament, he said, [paraphrasing] "there is not a single game played in the recent Grand Chess Tour that would rate with the top 30 games of Zurich." I thought this was an interesting observation, considering how we think chess has progressed over the years. There is the notion: The games of Zurich might not stand up so well to "engine accuracy" but they might be regarded, nevertheless, of greater quality than most games played at the top level today because incomparable ideas were invented at this time, including opening ideas in the KID and Nimzo-Indian, etc. - all done by the mind with zero computer assistance. It makes me wonder if something of the art is being lost in modern chess; and yet, the chess of our top players today is enjoyable to see, in many instances. There is probably something there to think about. Is it the case that the chess of the Classical Era, 1960's and prior, was in some way more beautiful and more interesting, and had more ingenuity and creativity, than what is played today?