They do. Look at city planer plays video. According to this, I can hope to get a bit more then 30fps at 1080p with medium details with my 4070 ti and 7600x. Beyond that, I‘ll get a slideshow. For most PC owners out there, the game will be unplayable in it‘s current state.
I must say that between Cities Skylines and the last Sim City, I preferred the later because it had several of the expanding service facilities functionality built in right from the start.
This is fine!