Where your account is hosted and which communities you subscribe to doesn't have to overlap at all. For instance, I'm on VLemmy but almost all of my subbed communities are on Beehaw.
I also think it may be a feature rather than a bug to have multiple communities for each topic. Each individual community can build its own sense of identity, guidelines, and norms. I'm personally feeling refreshed by the smaller volume of posts and comments in a way that encourages me to engage. Reddit had become very passive for me due to the sheer size of everything.
Tesla has released all the specifications, so other charging manufacturers can include NACS cables on their charging stations. Several have already indicated an intent to do so.
What Tesla will charge for is access to their charger network, which is probably fair since it costs a lot of money to build and maintain the network.
I for one am very glad to hear this news because the supercharger network is Tesla's one remaining big competitive advantage, and I'll be glad to see all the other car companies more on equal footing with them.