Hello @CKWarner, account issues including refunds are not handled on this issue tracker. Please give feedback on Steam Support for this topic.
Specific to this game, it looks like this game developer is not providing future updates, which is not the same thing as taking away access to the game you paid for.
@kisak-valve I opened the issue here because it's a policy that Valve needs for developer behaviour that disproportionately adversely affects Valve's Linux Steam customers. The support pages for a particular transaction don't cover that. Confidence of all your customers in your platform is reduced by actions such as this, even if they didn't buy that particular product. Developers like Snoozy Kazoo are harming Valve and Valve's customer relationships.
The current policy is flawed: refunds require manual intervention, from both Valve and the customer, and only if the developer's actions are high-profile enough. Developers can simply lie on the Steam Store page about which platforms they're supporting, then drop official support when their untested product doesn't actually work and keep the money, with no downside to them but active harm to Valve's customers and Valve's reputation.
When a developer pulls those bait-and-switch shenanigans, Valve needs to automatically refund all the customers affected (since Valve knows which platform a game was purchased for) without Valve or the customers having to do anything manually. Customers are made whole, and Valve's reputation as a reliable retailer is maintained. Developers are simply returning money that they obtained under false pretences.
And, hopefully, it won't be a mechanism that will need to be triggered particularly often.
Nothing extracted yet.
Situations like this one are unacceptable. Every time developers pull a bait-and-switch scam like this one, it reduces customer confidence in Steam as a platform.
When something like this happens, Valve needs to provide timely and automatic refunds to everyone affected, to restore confidence to their customers about buying things on Steam, and withhold funds from the developers until the cost of doing so has been recovered. That's what other retailers would do to protect their brand and their customers.