It will likely have to be paid. Someone has to sit there and go through paperwork to verify that you do indeed have a license or in the worst case intervene if the automated way fails. Then they approve access to the plugin.

It's like this for every engine. You need to prove you have a license before you get access to the parts touching the console SDK.

Judging by the description here it will probably be paid towards W4 Games https://w4games.com/products/

But it should be one click to export after that, rather than hiring them to do the port for you

Yeah but then how do you attract game developers to your engine?

It becomes a chicken and egg problem: consoles won't support the engine unless there's a demand for the games, developers won't make the games unless there is support for consoles.