Just starting on a localhost server (admin with plugins etc) testing builds etc.
can I get a vac ban on my own server because of using plugins etc and admin commands etc?
No, you will not receive a VAC ban on your Rust server just because you use plugins or admin commands.
You can get blacklisted if you make your server a Vanilla or Community one and then used any plugin that will change the player experience,
I believe he was referring to his Steam account being subject to a VAC ban. However, of course, some plugins may be against the rules of the community server guidelines, and using them may result in your server being blacklisted.
Thank you for clearing that up 4 me