Android runs almost all USB keyboards and mice or touch pads, you can totally have that as an option for your phone. And it's like 50 bucks to get a powered hub that can also charge the phone OTG while connecting all those USB devices at once.

It is the same size as as the common smaller form factor tablets have been for a decade. And note pads also have been coming in this size for over a century.

It is smaller than the average phone when folded into phone mode. Especially if we are not only talking smart phones, but even if.

They are indeed relatively more expensive right now, I got mine "open box" for half off, and it was about the price of a contemporary regular smart phone then. But they won't always be this much more expensive.

You are not always near your 75 inch TV. It's nice to have an acceptable option when out and about. Fold 4 also has spacial audio, you get your head about a foot away from those speakers in horizontal tablet mode, and boom, the virtual surround sound is surprising. (Anyone who has one and hasn't tried it yet, take this moment to try it out then come back) (it's pretty crazy, right?)

It is what we claim it is. Just my 2 cents. I hope eventually the price gets to a place where more people can choose it without having to worry about whether they can justify it.