If you want mass adoption, you need to make it financially viable for commercial indies to use your engine, and good luck convincing those people if they know they need to hire a 3rd party company to port to consoles.
Since Godot can't really go the console route, though, they basically need to do the work of figuring out how their users can make enough money on just web, mobile, and/or desktop, and then articulate and successfully sell that solution to them. Steam Deck could help for sure, but it's a big ask