This thread focuses on casual or discreet-use concerns. I asked the same thing because it is hard to tell whether a platform is actually active or just full of empty promises.
For most people, the decision comes down to whether the app is active enough and whether it feels safe to browse. I also pay attention to how much personal data the app asks for at signup, since privacy matters more than flashy branding.
If the platform cannot prove it has active users, I would rather move on and compare it with the more obvious options.