I'd say Touhy was better than 'pretty good' in college, but otherwise I agree with you.
Her 1-2 yr college run was very similar to Jenny Simpson with wins and records.
What hurts her claims though is Valby came along the next year and did almost the same and then added the Olympics. Meanwhile even Grace Hartman and Napoleon at her own school are duplicating or beating her times.
Still 5 nxn races w/ 3 titles, and 4 ncaa xc all american w/ 1 title and 3 team wins is hard to beat for durability and consistency.
The issue with 'generational' is that a generation is 15-20 years, ie was she the best runner of her generation? Well no.
Cain, Efraimson, Hedengren, Engelhardt, Hutchins, Cook and Leachman at high school level are faster, Valby, Hartman, Napoleon and perhaps shortly Hedengren are faster at college level. Cranny, Houlihan and Purrier as pros.
My guess when the dust settles Cain and Hedengren will be the 'generational' talents, also Cranny and Simpson very good at 3 levels of hs, college and pro.
Still it will be Hasay and Tuohy that had the biggest impact on the general public, and these two both had longevity that others will not be able to match. (Hasay 4 Foot Lockers, 2 wins, 4 yr Oregon career, and brief but effective pro marathon success)