Where stream ends
Using a platform you don't fully control (i.e. own) to promote yourself, can be problematic. Especially if you use mostly or exclusively a single platform. But it's a problem only if you don't direct people to something you are in control of via the platform (i.e. if the platform itself is the end of the stream).
If the platform you use would completely remove your account tomorrow, will people even know where else to look for you?