Hosting an instance just for yourself?

Hello, with the spicy beehaw drama I was wondering, would it be possible to selfhost a lemmy instance literally just for yourseelf and no one else to like, circumvent any defederation shenanigans? As all instances federate per default, this should work right?...

https://kbin.social/m/[email protected]l/t/25230

Hosting an instance just for yourself? - asklemmy - kbin.social

Hello, with the spicy beehaw drama I was wondering, would it be possible to selfhost a lemmy instance literally just for yourself and no one else to like, circumvent any defederation shenanigans? As all instances federate per default, this should work right?...

Other than that is there any obvious downside to doing that?

You must be able to administrate and pay for a server.
Apart from that, it would not be nice to participate in the network and use the computing capacity of others, but not bring any infrastructure into the network yourself (by registration lock).

But if you are pulling all the data to your instance by subscribing, wouldn't this actually alleviate some of the load on the original instance? Obviously not as much as if you were hosting the content yourself, but still moreso than if you were directly interfacing with their instance?

Or am I completely wrong there. I don't have a firm grasp of how content stored/cached between instances.