Lot of speculation in this thread presented as fact. My take is this is a small community.. we all know each other. If doping were as systemic and prevalent as stated in top level middle distance, it would be out and people would be getting popped or comments would be made in media by disgruntled competitors or whistle blowing ex teammates.
What we do know is:
1. training has improved, people running more and not flogging themselves on stupid reps as much. The success of the high mileage Norwegians has inpired this and a significant number of coaches doing this now.
2. improved spikes give better recovery, and may give some time. I say may as I haven't seen my athletes improve much with the spikes up to 1500m, but definitely do over 3k and up. They injure people less though and doubles like the incredible one we saw yesterday are now possible.
3. normal training shoes have improved and people are injured less.. I can't compare modern shoes to the ones I wore in 00s, 90s. For me they leaped forward about the Pegasus 36 timeframe. Materials, support, variety are better.
4. We have a few game changing athletes. Jakob has changed the game in that he actually races from the front at a hard pace.. he is the world's best pacer as he says and most top middle distance runners got their PBS and national records in his wake.
5. Pacing lights work and the tracks are faster. I think hard Mondo tracks would have hurt people more with the old spikes but the new spikes compensate for the hardness.
I see zero hard evidence that a portion of top track athletes are doping. Obviously we did have a lot of Kenyan athletes popped recently. Mostly these were road athletes and none of the top ones.
The top distance women have definitely levelled up but until there is someone popped in the Kipyegon, Tsegey or Gidey camp or some evidence of any kind other than fast times I take them at face value and mark them as either generational athletes or that the level of the event was lower than we thought and training methods, etc rising the standard for women.