Listen, I think you're getting a raw deal, and I haven't seen the bolded language you referred to before, but based on the language you quoted in your first post, I think the provision requires meeting the standard at the championship race (though the language is a little too unclear for my taste, which is why you're in this situation).
It says, "Automatic selection will be given to the first U.S. Male and first U.S. Female at the following races, provided minimum performance standards are met (see 2 above)." The use of the present tense (or whatever you want to call it) "are met" means to me that the standards "are met" in "the following races" referred to. If they meant "met at any time" before closure of the window, the provision would say that, or something like the standards "were met" or "have been met," but they didn't.
Also, if you look at prior year auto qualifiers, you'll see that this is the interpretation they appeared to use (meeting the standard in the race). In 2020, the world championship "auto" qualifier is listed as: "Kallin Khan, 2:57:51, 2020 USATF 50K National Championship, Caumsett at Heckscher State Park, 3/1/2020." In other words, got the auto because he won the title and did so in a time faster than the standard.
Having said all that, I reiterate what I said before: given the vagueness, I think you're getting a raw deal, and I hope you get a shot. USATF needs better language.