One of those endearing things about Japanese culture is that it's like a culture of nerd celebration. No matter what mundane subject matter you can think of (trains, flower arrangements, rice balls, etc.), there will be Japanese nerds out there completely dedicated to all of the little intricacies of such things and taking it to a completely unnecessary but amusing level, and the other Japanese people will be cheering them on instead of condemning them.
Like this Japanese lady who runs an umbrella store and is so dedicated to her craft that she can identify the different types of umbrellas just from hearing them open:
And here's a sample set identifying the sounds of different types of umbrellas when they open:
This is like autistic levels of dedication.