For me the pen is the USP, and without it, I had moved to Apple long ago. That is because I can quickly pull it out and jot down a shopping list. I can also use it for mark-up when reading a PDF file. Why would I use it for photo editing, if I have a laptop with a high-res OLED screen (connecting to an 8K monitor at home)?
The cameras up to the 3x "Zoom" are useful, because I can use the phone as a visual notebook when I do not have a "proper" camera with me, or because I am in a place where I am not allowed to carry my equipment. The 10x lens is nearly useless - how often do you take pictures with a 250mm telephoto lens on your DSLR? - but the reviews will focus on that and show crops of pictures of number plates taken across lakes. A feature only designed for reviewers, at the cost of utility - a shorter 6 or 7x lens would have had less of a gap to the 3x, hence less "digital zoom" in real-live pictures. And the benefit of a sensor with more than 100 MPix in a smartphone is beyond me anyway. They are integrated nevertheless.
All the other features - faster processor, higher screen resolution, high refresh rates - are useless for me, as my most-used apps are Outlook, Audible, web browser and camera. A battery lasting for a week would be cool, but if the trade-off is a brick in my pocket, I can do without.
We all have different preferences and needs - so please stop patronizing us what we need and what not. If there is a feature of which enough people believe it is useful enough to choose a phone over another, which is unique in the market, and probably costs much less to implement than many other gimmicks which are much less differentiating, it's probably a good idea for Samsung to stick with it.