Did some googling. Found this from a reddit thread but the link they gave is broken so I wasn’t able to confirm. I believe it might be adult content based upon where the broken link redirected.

Source! is [Miyabi] Watashi no Suki na Oji-san x Ore no Suki na Iede Shoujo Ge

The OP scene is in ch.3 pg.9, but it’s edited. She actually says, “I want to stay here!”

I remember exiting Windows 3.1 to the MSDOS command prompt and then shutting down.

It’s been fine for me too. But I would guess they mean carriers being slow to adopt it.