Love the rhetorical question Aaron ;^)
Gora - a physically connected webcam to OBS Studio computer is easy to add as a Video Source in OBS
Have you read the Getting Started Guide on this site? or any the free electronic books on OBS Studio?
Where things get quickly not easy is when that video is remote to the computer. Then you have to understand protocols, networking, bandwidth, jitter, latency, etc.
your post is not clear what EXACTLY you are asking
- Do you need to be careful with Operating System Security (Permissions) on Audio and Video sources, including local ones, as the old, simple, everyone gets Full control is no longer used, so you need to be explicit (yes, this means you need to dive deeper into Operating System)
- Are there a wide range of methods to connect a remote video source into OBS Studio? Yes
- Do some of those methods require configuration (device drivers, settings, full application install) at Operating System level? Yes
- Do some of those methods require 3rd party plugins for OBS Studio? Yes
- Which plugins, configurations? it depends