Age isn’t the only factor.
-Tim was dealing with injuries all last season, it was his worst season since 2016
-Kipsang was chasing after paydays/teams in his first season as an established guy over timing a peak
-Katir got COVID, battled some injuries and was a shell of himself until Spanish Champs
-Kerr complete wild card and that’d apply to this year, too, so fair points on him
-Wightman yes the rare guy who might be in worse position than last year due to injury
-Kipkorir Cheruiyot, younger/rawer so doesn’t apply
-Nuguse injured/in NCAA system, young in pro years not prioritizing dental school over track