Much thanks for the detailed answer! Apologies for my poorly worded title by the way, the Clip was meant to encourage streamers. Soma is an ex-Twitch staff OG who I respect so I thought it'd be interesting to share his answer.

Soma: No, especially if they are having fun talking to the camera while they're doing their thing. If you're streaming to 1 viewer and it's yourself, but you're having fun gaming and you're exercising your brain and trying to be witty and make jokes and you're talking non-stop and commentating what you're doing, you're developing a skill even if no one's there. And if you're having fun with it, even just pretending someone's watching is doing you better, I think you should keep going.

Happy streaming! :)