If you attract the attention of the authorities and you use a residential connection with multiple users, they will have a difficult time conclusively establishing who did what.
If you use a VPN it’s likely to be a lot easier (single user, paid with personal card, etc) and it looks like you’re trying to hide so the penalty may be higher.
They already send your graphics card name, driver version, installed fonts, screen resolution, browser window resolution, its absolute position on screen, your local network ip, local time, languages installed, orientation sensor, and a million other things.
But somehow a simple flag like DNT is a priority for Mozilla?
Liars