You don't need user interviews, you just see where they are going. Are they discussing this on twitter or reddit? Are they making YouTube videos? Did one of th

You don't need user interviews, you just see where they are going. Are they discussing this on twitter or reddit? Are they making YouTube videos? Did one of them start a Discord with lots of people there? Once you see what works, make an official one. Funnily enough Discord was the only one I didn't start myself. I liked something async with proper Google searching better. So even when I tried, I wasn't able to steer them.