Sure. But the example was sketchy at best. FfVIIR’s sequel will most likely have Part 2 or some other title of that type attached to it.
Yes but the difference is with the first TLOU, they didn't know if a sequel would be made so calling part 1 would be weird. With FF7R we know for a fact that this is part 1 of multiple parts so they should have indicated that that was the case.