You can argue as much as you want, but the full usage of a vpn is illegal in russia by law, because you could access real informations instead of their bullshit propaganda.
Yes you can install it freely and “use” it to a certain degree to browse on pages uncle Putin allows you, but you can’t use it completely without any restrictions, e.g the definition of real usage in my opinion. So in my understanding the (full) usage of a vpn is prohibited by law in russia.
And they are now actively blocking protocols…so 🤷♂️