Absolutely horrible technique, and yet a time 3 mins faster than anyone has ever managed before or since, in the women's race that would equate to what? 1km or just over? (2.5% race distance). Which is equivalent to running 10m ahead of WR pace every lap for 100 straight laps. Hilarious, and yet people think of the 100, 200 and 400 as being untouchable.
And iirc wasn't her WR paced by men ?
Just because a WR wasn't set in the 80's does NOT mean it is any cleaner whatsoever than those that were