A known leaker and SteamVR data miner named Bradley Lynch reports that Valve is working on an Android emulator. Lynch has spotted five apps in a package on SteamDB, with two of them displaying new artwork that references Waydroid, an open-source and free Android emulator.
Sadly that’s mostly true, but that may have more to do with devs lack of experience with Linux in general. Often they would have to outsource the port to Aspyr or another team.