School says MUST buy 2.5x mag loupes?

I am an incoming D1. The school sent us a notice that says "please do not order higher magnification than 2.5x." So what's the deal with this? Almost everyone (not everyone) on these forums seems to prefer 3.5x or even higher. I have my conspiracy theory how this is a sales scam, since it will force us to buy additional loupes in the future. But what's the actual reason? Is it better for learning, developing hand skills, seeing the "bigger picture" as a baby dentist? Is it just to... School says MUST buy 2.5x mag loupes?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Dental Source Type: forums