Honestly, I don't have a good source within the deck guidelines for this one, however this is certainly how I've learned it, as has anyone who used ABG.ninja to learn ABGs (which I understand from Reddit is quite a high number of people). Supported by pulsenotes (https://app.pulsenotes.com/clinical/abg/notes/abg-interpretation) but there's no society that really covers ABG interpretation! I did check amboss, which doesn't mention partial/full compensation, however these cards threw me off and made me get the pH wrong (as a fully compensated alkalosis would have a normal pH) meaning I'm currently memorising the cards rather than the facts. I expect a number of others are doing the same, or have simply edited it on their end.
Thank you for detailed rationale, but need a better source to support