why not? just solder an on switch into it

Most of mine are just like that, but getting the TS100 is a real bonus for SMD stuff, for heavy stuff,and primarily for me can run off my Dewalt drill batteries. Being temp controlled with swappable bits with different elements means you can go from a tiny tip to a massive wedge using the full 100w very easily, and being able to do that inside a speaker can in a field without having to find an inverter or whatever is well worth the price of admission

That's fine for simple work, but soldering can absolutely benefit from a temperature controller. That's either a simple analog controller, or a microcontroller that has a display, menu, and consecutively, firmware. There is nothing complicated or "eccentric" about that in case of a soldering iron.

I'd even argue it's the same with the device in the original post. I get it's a joke, but let's face it, that's not simply a kitchen knife.

Now if anyone can tell me why the fume hood in my kitchen is wifi - enabled... I never hooked that up, obviously, and all I can think of would be push notifications in case of an upcoming filter change, you know, the thing that could be implemented with a simple LED for 4ct.