@Adventurer Like I poijted out, a VPN is just a long ethernet cable. You're just plugged in over there.
If you do something over that VPN that involves your ID, such as logging in to your accounts on social media, email, etc, allthe traffic you sent over that VPN is now tied to you.
If you are posting speaking ot against the gov, have accounts you use only for that, and only log in to them on VPN, and never your other accounts on VPN.