The Danish word "effektiv" I believe carries the meaning "not amateurishly put together" so it might be more of a grey zone leaning into illegal still. Some might after all still call a vaccine effective if it "only" prevents 95% of infections against a certain virus and has a 2% risk of certain moderate side effects.
But interesting tid bit as it's also relevant in a Danish context. I didn't know about it.
Fun fact, Finland and Sweden were also third world countries under this definition.