Ok well if that was my data set, then I would also share your opinion.

Go to a hospital. Crocs as far as the eye can see. And they work long grueling hours.

Was your coworker an old man with gout? Foot problems from an unrelated soccer injury? Just lying to you and you're buying it?

10mi/day for about 2 years on the same crocs, I haven't even had to buy a new pair yet, no foot pain since the switch. Again, I'm forced to trust my feet over your anecdote.

I worked at a running shoe store for a while. If there was one thing that was a given, it was that no two feet are the same and no shoe will work for everybody.

I'm a huge fan of Altra. I wear their shoes to work and to run, and though I haven't run as much in the last year or two, I've been biking a lot, so I've repeatedly been in their emails asking them to introduce some cycling shoes, or at least do a design collaboration with an established cycling shoe brand, so I don't have to be stuck with the Scott ones I've been using, which are fine, but don't have that Altra fit that I really like. I got several pairs of Altra running shoes when I worked at the store: some Escalantes, some Superiors, multiple pairs of Lone Peaks, some Torins, and even some Commutes, and I've been extremely happy with all of them. But I'm a relative minority among the set of people I worked with, because a large majority of my customers didn't get along with them.

I don't own any Crocs and don't have any plans to, but your assistant does appear to be in the minority when it comes to them.