Elgato Stream Deck Plus is the best Streaming Device Elgato offers (in my Opinion).

Do I regret buying it as non Streamer and Apple user?

In this Video you will see the use cases I have and the instruction how you can set up the YouTube API Key for Stream Deck Use

0:00 My Profile
0:22 Elgato Stream Deck +
1:28 Music Control
1:37 Shortcuts Apps
2:04 YouTube Studio
2:40 YouTube API Key
4:17 YouTube Video Control
4:44 Google Chrome
5:04 Smart Home/Lights
5:38 Elgato Prompter
5:54 What else it can do
6:21 Conclusion