No, I do not see the irony.
Very obviously.
Each device excels in what it does best: cameras take photos, GPS devices guide. It is not simply about more features, but about more relevant features (relevant for its main purpose). A separate GPS device is an order of magnitude more useful for its designed purpose.
Still completely missing the point I see.
People want to add GPS data to their photos. A separate GPS device does not do that for you, however a camera can do it very easily, therefore an order of magnitude [which is a complete misuse of the term] better than separate devices. i.e. much easier and time saving. You also seem to be confusing sat navs with GPS devices which have a variety of uses/functionalities/abilities. I have a gps device for my bike. It doesn't guide me anywhere, it does however record where I've been and gives me live feedback of various things and it is very useful indeed.
Lets reverse the example: lets add a camera to a GPS device (not inconceivable, given the size of phone cameras, and funny no one has marketed one yet). Would you take that contraption to take pictures? No way, right? You camera is so much better for taking pictures, you'd say, no?
Maybe one day your washing machine could reuse all that hot water and make a soup as an extra feature? I'd stick to my slow cooker.
Your stance is more reductio ad absurdum that anything else. People don't want to add photos to their Sat Nav/GPS device, they want to add gps to their photos. Not to mention phones which have GPS functionality and have replaced sat navs for most people and can take photos, so that sat nav device with camera you mock is in fact most people's favourite camera. I wouldn't waste money on a separate Sat Nav device as my phone is a far better tool for my and most people's needs than a fancy sat nav device.
As it happens Garmin who are a big cheese in the world of GPS devices has added a sports cameras to which links into their GPS devices.
The point you are missing is this is a very useful feature that people actively want in their cameras. Nobody wants or has even suggested a device, bar yourself with the irrelevant washing machine comment, something that no-one wants or would even be of any use. You don't get it, we understand that but others do understand the use and would find gps in camera useful. Why even bother complaining about features other want and you do not?