No it doesn’t. iOS’s UI toolkit has numerous tools to allow a design to adapt to screen size. There’s no reason an adjustment for a smaller screen would have any effect on a larger one.

I’d have to argue that poor design work in general is the cause for this. “Mobile first” never meant to neglect the desktop experience - designers who do that are just poor designers to begin with.

In Russian, there is a saying: To a poor dancer, their own butt gets in the way...