I've been using it for a while now, and it is fine. But it is very often that I open htop and kitty is one of the big cpu wasters. Maybe I've configured something wrong? But yeah, sure, works.
Eh. It's not really a definite distinction. Even in GR you formulate effective potentials and the gradient on those potentials are still called forces. Then, what is a force on microscopic scale? It is the exchange of force mediators, like photons. If gravitons exists, then there is even a similar framework for defining a force on a microscopic level for electromagnetism as well as gravity. Furthermore, electromagnetism (qed) also has an interpretation as a curvature, as it is a gauge theory, just not a curvature of physical spacetime, and that does not disqualify if from being called a "force".
After using LaTeX for a while, and then going "wait, is that not latex?", when you see some equations where the spacing is a tiny bit off. Then you know you are damaged forever.
Depends on what you mean by "real". As in " corresponds to physical reality", no. As in "a real model which people are researching", yes.