This indie games are also made by amateurs without the ability to make something with the breadth and scope of an actual Elder Scrolls game. They're not bad because the tech sucks; they're bad because they're not well designed in the first place.
Check out The Outer Worlds for a competently made game of similar scope and mechanics that's also on Unreal and doesn't suck.
The Outer Worlds is a good and fun game, for one fast and very linear playthrough with a great storytelling.
But it has no replayability and it has zero possibilities for modding.
It is not in the same league as Skyrim or Fallout, not even Starfield.