[stavros]

I don't know why you're singling out model train enthusiasts. This describes many people I know, and an extremely large range of hobbies.

[sokoloff]

The "singling out" I read as because the topic of this article that we're discussing is model trains.

If this article was about $OTHER_HOBBY, there would be a citation of someone who spent a ton of money on $OTHER_HOBBY.