Has it ever crossed your mind that runners might be faster now than they were 10-20 years ago?
At the collegiate level, was a 3:56/7:46/13:28 not making INDOOR NCAAs just a fluke? An also-ran running a 3:52.02 indoor mile? 20-year-old Westerners suddenly routinely running 13:20?
At the national level, what about a 24-year-old American running 12:53 indoors closing in a sub-4 mile. Or a 26:33 10k in the United States?
At the global level, Cheptegei is clearly beatable, as evidenced by losses last year up to and including the Olympic 10k and a narrow 5k margin. He owns the WRs in the 5k and 10k both run in hot weather. I'm not a genius, but I feel that implies that other runners can run pretty fast times too. That means sub-12:40 these days.
Here are some things to consider:
It was several years ago that Kejelcha actually pushed the pace in good weather in a 5k and the result was 3 guys running low-12:40s. Barega won that race and went on to beat Cheptegei in the Olympic 10k.
If Justyn Knight can run 12:51 I'm pretty sure at least 3 guys in the world can run 12:3x.
I haven't even mentioned Mo Katir who ran 3:28 and 12:50 at age 23 after just a few years of training.
Jakob of course defeated most of the heavy hitters in Florence last year in 12:48 in a not ideal race, and went on to improve his 1,500m PR and win the Olympic Gold. His trajectory would indicate 12:38 fitness or so in 2022, especially because of his unique training approach. Not a gaurantee, of course, but likely.
Cheptegei is making ANOTHER 5k world record attempt in May. Why would he do this in a championship year if he didn't feel that his record might be under fire? And who's to say he'll even win that race, if PRE Classic decides to invite the other heavy hitters to go for the record as well.
It's not some "roll of the dice" in which you randomly divide all of history's greatest runners into various epochs. It's a general increasing of the level, as evidenced by the insane depth of times and quality of races, and shown in most other sports too, and aided by supershoe and supertrack technology.
In conclusion, yes, Hocker and Teare are going to end up running a lot faster than Ritz and Lagat. They're already knocking on the door.
Open your eyes.