Ah, yes, quite right, my mistake. The same thing applies though, just which records are "dodgy" and which are "clean". Who decides, for instance the long jump record I think stood for years. Was the jump chemically assisted, or was it one of those days when the wind was just under the limit, the takeoff and run up speed all were perfect, and the fly through thinner air all came together? And how is anyone to judge this, as an example.
It might be better if they just reset the clock, left all old records as historical, and started from scratch with properly tested athletes. Like, no test, no blood passport, not on ADAMS or equivalent, no record, whatever the performance.