I don't know if it's on any of their other mice, but Logitech does have a DPI shift button on the G502. You hold it down to switch to an alternate DPI and letting go returns it to you normal setting.
They are. They got released on the eshop same day as their announcement. It looks like physical copies are coming in September which might be what they are referring to.
I don't really like the logic of "chatbots like this will help cure loneliness." It might help someone feel less lonely at first. But then it'll be a crutch and, if anything, hurt people's ability to socialize with other real people. Like it's a quick dopamine hit that will slowly dig you deeper into the hole you feel you're in.
I don't know if it's on any of their other mice, but Logitech does have a DPI shift button on the G502. You hold it down to switch to an alternate DPI and letting go returns it to you normal setting.