I think it is very well explained. You don’t need to go to other instance to follow them.

They are just merging with another community for convenience.

I don’t get why are you so upset. It’s not a big deal.

Also, you can create your own community in any instance you want.

I like to post to my WordPress blog from my desktop, so I use Open Live Writer. It’s allow me the option to write without being connected to the Internet. I doubt it still in development.