Your correspondent argues that you can own ten guns without being a “gun nut”, then proceeds to list an inventory that he feels makes his case.
Let’s try to approach on different collections. Suppose I owned ten motorcycles of different types. Perhaps a cafe racer, an enduro bike, a big touring bike, and so on. Would that make me a motorcycle nut? Probably. You’re a runner (I think). Maybe you own ten or more pairs of running shoes. [JF note: Over the years, yes. And let’s not get into old computers, or types of beer.] I’m sure you can come up with a better list than I can, but I can imagine shoes for street running, dirt running, trail running, training, racing, and so on.
Does that make you a running shoe nut. Yup.