I think the problem with the word "soft" is that the record is what it is because of the MTSAC course. It is a hilly course that can zap your energy for a number of reasons weather it is 2.91 or 3 miles. I believe the record is what it is because of the course. And comparing Farahs 5k PR is completely different because it is one persons best record as opposed to many peoples best effort over like 65 years, many runners (many great runners) have tried to be MTSAC record holders only to come up short or beat it by a second. With that being said HS running and HS sports in general is not what it was years ago, parents, runners and coaches (HS and club) are more business like with so much at stake scholarships etc.
But that is just my opinion........