No it's not that here is a screenshot I just took its in the command console that says it vac secured even though I chose local server in the menu and I did the -insecure and it said it was disabled.
I know the text in the image is small but hopefully it showcases what I'm talking about
However this statement definitely gives peace of mind. I'm gonna assume if I don't get vac banned within a month I'll be safe. I don't know why people say it takes up a few months to get banned or a year I think they're bluffing.