Personally, I think some separators are omitted in this phrase structure.
I haven't seen this usage in out of condition. It should be that the in state is good/the out state is bad, and the in /out state is ok. In and out are juxtaposed.
The adverb "complete" modifies adjectives here. Completely healthy or suitable is not smooth at all, it should be "completely healthy or suitable is completely healthy, in good health, unsuitable is unhealthy, in poor health", completely healthy or suitable is juxtaposed with the following unsuitable.
For your reference, welcome to exchange and correct me!