First, the quote talks about what I do privately. AGPL explicitly encourages me to do whatever the hell I like with it. I don't need another license.

But broader, the interpretation that AGPL microservices are viral is just one interpretation. If it really is just a swappable backend interface, why should it affect other subsystems? IANAL but it seems pretty trivial to insulate a microservice with the same sort of GPL condom companies ship to avoid "linking" to (eg) the Kernel.

https://medium.com/swlh/understanding-the-agpl-the-most-misu...