Note that you don't have to have a social account. And there's work on the semi-distant horizon for creating sub-accounts which are independent but all under a common top level account kinda like how GPG conceptualizes subkeys or cryptocurrencies handle derivation keys.

For the current moment though you can just create an atproto account without creating a bluesky account. Tangled for example supports this on their site by creating one for their PDS and you can always move to another PDS in the future.

The over-arching idea isn't that your code is tied to your socials but rather that you can have a bunch of disparate services that you can interlink over a common identity layer and that those services are only loosely tied to the people/orgs hosting them but could be trivially hosted by anyone else.