If they were Ubisoft, Sony, Nintendo or any other shitty company they could block access to the Steam account or ban it outright, cutting me off hundreds of games. Hopefully, Valve is not like that yet. So, yes. I trust they wouldn’t do anything fucky when they notice that I’m connecting my Steam account to a device, theoretically, blocked in my region. But there’s some really intrusive shit you could do to prevent access or force it to be a piracy only machine.