I think with the old scoring system it was kind of easier to have so many swings because matches could last much longer. Probably most of Karpol's OHs had appx 100 attempts in the 90s, and watching the 88 OG final I would guess that Smirnova and Sidorenko both must have at least 80 attacks in that match as well, probably more.
yes, I get it that in old scoring system it was easy to spike more times but 100 attempts looked too much for me...but it seems it was true