Your personal bias against Flatpak is irrelevant to the lie that no stable development target exists.
It exists. That's a fact, whether you like it or not doesn't matter.
Linux doesn’t have a stable target to develop against
That's an often repeated lie. https://docs.flatpak.org/en/latest/available-runtimes.html
So Sweden will not join the Euro without a referendum, even though they don’t have an opt out.
Sweden is a member since before the Euro. That's one of the special treatments pre-Euro member states get. A rejoining UK would be treated like a new member and better come into line.
Clarification: He drew a CAD model for the rule boxes where the actual bodywork has to be in. The result is not a proper F1 26 car but something that looks like a lego model. This is the foundation for upcoming videos.
I don’t even know where to begin troubleshooting it.
Not really your task, though. You are a paying customer and the developer needs to accommodate you, not the other way around. Easiest way should be that the developer provides a Flatpak version.
We could make EMU membership a condition for their EU membership
That's already a condition. New members cannot opt out of the Euro once the criteria are met.
disproportionate cost of membership
Disproportionate were Thatcher's UK Rebate and other unfair opt-outs.
In a larger sense, I think supporting them would be supporting gaming on Linux as a whole.
Bottles and similar projects don't develop the underlying technology, though. That's Wine. Bottles is a front-end with a bunch of support scripts.
Why not just use the Linux version directly?
I don't know how much of the 3 million installs I represent but I installed it, found the whole process to create a bottle an unnecessary hurdle and didn't see any functional benefits over the five or so alternatives that also aim to make Windows software compatible with Linux. The Gnome headerbar UI also is alien on both game and desktop modes of SteamOS.
So I uninstalled it.
That's why future ChromeOS won't be a dedicated OS with an Android running in a VM. They'll be actual Android.