Incorrect error with axiom dataset list for bad deployment alias

[darach]

When using an alias to that is no longer valid the axiom dataset list
command returns an error of the form:

$ AXIOM_DEPLOYMENT=bogus-no-longer-valid-env axiom dataset list
Error: cannot decode response with unknown content type

This can be cross-checked with axiom auth status which will show valid and non-valid auth tokens by alias

[lukasmalkmus]

What does is no longer valid mean in this context? It doesn't exist in the ~/.axiom.toml?