Alright, if you're happy to discuss, then let's discuss:
1. Xbox Game Pass is not a PC storefront like Steam or Epic, nor is it a third-party provider like Humble or Amazon. All XGP games are played through the Microsoft/Xbox store and former titles remain available for sale through that PC storefront.
2. If you decide to document Hades' former availability on XGP, then you've set a precedent where EVERY former XGP title ought to be documented for their delistings. Hades was not the only game to be delisted in August 2022; to otherwise grant only Hades this particular distinction, when other titles fall under the exact same criteria, communicates partiality and bias, which is neither the purpose nor is it encouraged in a community-driven Wiki.
3. Details regarding Hades' former availability on XGP are not very helpful for current users. The fact that Hades was formerly available through a subscription service does not inform a consumer's choice regarding where they can currently play or purchase the title.
4. Documenting a game's former availability on a subscription service is unimportant. We primarily document a game's historical availability in a previous storefront because users can still access and play the game through that original storefront (ie. when a user redeems a Steam key). Because details regarding a game's DRM prove useful in those circumstances, we leave such information as be. By comparison, a game becomes impossible to access, install, redeem, or play through a subscription service once it's delisted, so we find little reason to preserve those details.
Frankly, we decide to omit details regarding a game's former availability on XGP because they prove unimportant and unhelpful for current users. But as a fellow contributor, I respect your point of view and perspective. I will therefore wait two days for a response, so as to offer you a chance to rebuke my argument. Otherwise, I will revert the edits you've made.