My thoughts were a bit confused there. Yeah, you can have all the modders just pay once, but, making modding free is what the problem is. It is actually an immense waste of time and resources to have modding tools developed for every new game, just to get around an EULA clause, and is anti-economy, it’s an increase in the amount of work that has to be put into games, i.e. they are making developers do more work for no reason. It’s not financially viable for Epic or they seem to believe so.
I actually have no problem with the idea of paying once myself for the subscription for games that use Unreal. But it is not affordable for most people, I don’t think.