https://partner.steamgames.com/doc/features/keys
It’s OK to run a discount for Steam Keys on different stores at different times as long as you plan to give a comparable offer to Steam customers within a reasonable amount of time.
What about that is unreasonable considering you’re using their platform to deliver your software and their multiplayer framework. Steam makes no money on the sale of your keys.
Also, if your issue is that steam is a monopoly, then go make accounts in other places and stop supporting that monopoly you’re mad about…
It’s not questionable at all to assume that a user rooting and installing their own OS is a security risk. That’s the entire premise of zero trust. I’m sure Graphene OS is secure and better for user privacy when configured properly. But you can’t trust that an end user will configure it properly. That’s what I am saying and have been saying since the first message. You can’t trust the user to be security minded. Ultimately, the best thing you can do as a developer or a business is support a known quantity of software and hardware configurations and that likely means only supporting OEM installed ROMs.