Even as a Vstreamer, you can use webcam overlays. On YouTube, you can find numerous tutorials on how to create your virtual character for streaming. Some programs and tools already provide you with virtual and well-functioning characters.
If you still want to give your stream a face, you can, for example, also become a virtual streamer (short Vstreamer).
Therefore, a viewer can sometimes overlook it if you do not immediately respond to the follower, subscriber, or others. If a streamer is focused on the game and doesn't notice a new alert immediately, you will see the streamer's focus on the webcam. These emotions are often essential to a stream. But be aware streaming without a camera means you can only transmit your emotions through your voice. If you feel more comfortable without a camera, then stream without it.
Of course, you don't have to stream with a webcam.