It's just going to provide a weak substitute for actual socialization.
Talking with actual humans but only over the internet is not enough, I have been there and it was a terrible trap, it provided just enough to make it possible for me to avoid physical socialization, while not giving me enough to actually thrive; we need to get out and be in the same place with other people, doing things, making emotional connections, even if we are awkward in person because too much of our socialization has been online and we barely know how to carry on a conversation.
Talking with a fake person over the internet is not going to be any better, especially if this fake person is built with the same meticulous attention to maximizing engagement at the expense of everything else that has thus far characterized all our social media, it doesn't matter if these interactions make you happier or sadder, it doesn't matter if these interactions are good for you or society as a whole, as long as you keep coming back so the company can point at an ever-growing MAU number when they make their next pitch for funding.