I don't think the majority of the 800 guys are doping (* or any more than any other event). For years the 800m has sucked. Now it's finally just decent.
A mid 1:41 is like 3:28/3:29 equivalent in performance level. The 800m is just a weird event where it is harder to drop down to, or up to, from other events, at the very top level. You really need to be an 800m specialist to run 1:41. It's also a more challenging event to get the training right for. It's unforgiving if the training isn't really dialed in. The nature of it means a top runner is more likely to be off the radar in terms of being in the spotlight until everything comes together for them. I see this often at the high school level, where all of a sudden 11th and 12th graders are popping fast 800m times they weren't really getting before, either for being in the wrong event or finally getting the racing/training dialed in for themselves. Just pick your own state's top high school rankings on athletic.net for the 800m. When reviewing the prior years performances of milers or 400m, almost all clearly showed promise in prior years. So many of the top 800m are surprises in comparison, with middling performances in either the sprints, distances, or even the 800m in prior years until they really dialed in something right. I'm never surprised by runners having big improvements in 800m all of a sudden. I find it much more surprising in the sprints or mile+
When Coe ran 1:41.7 43 years ago (not even focusing entirely on the event), the world records were 44.26 in the 400 and 3:31.3. Having a handful of guys slightly under 44.2 and 3:31 after having none for years wouldn't mean that all of them are doping, it would just mean that the event is closer to being where it should be from a competitive standpoint. Having lots of guys running under 3:31 shouldn't be a surprise now, given technology and training improvements, and the same goes for having a lot of guys running under 1:42. It should probably take a sub 1:42 talent to make the US olympic team in 2024, just like it should take a sub 3:31 talent to make the US olympic team. I surmise more 1:41 talents end up in other sports compared to 3:30 talents. So many 800m talents are probably playing spring soccer or other sports in high school. Without the proper training they don't run the gym class mile that forces them into track.
I always sort of considered it a weird event because true 1:40 talent probably means you'd be competitive enough in the 400 or 1500, but often the 800m specialists often have huge dropoffs in competitiveness when moving to the 400 or 1500m, more so than other events.
If Nick Symmonds can run 1:42 clean, lots of guys should be running 1:41 clean.