My apartment block in London has underground parking with allocated chargers. There are multiple lamp post chargers over here and other types of chargers. So, for the moment it's already fine.
Not really. The cities across the world are introducing public chargers in lamp posts and at the kerb. While it is kind of an issue today, it won't be tomorrow.
The instruction set is a tiny part of the overall CPU architecture. You don't need to lock it as everything else is proprietary: manufacturing, cores, electric design, etc. Most RISC-V processors today use ARM cores and are subject to ARM licensing.
No, that twitter account is trolling.