Without mods, Bethesda’s games would not have been so consistently played since:
2011 for Skyrim’s FIRST release
2014 for Fallout 4’s FIRST release
Saying that mods aren’t important, is actually kind of weird. Without those mods keeping the games afloat through the internet ether, they would not be AS popular as they are today.
People STILL play Fallout 3 and New Vegas TO THIS DAY, because of mods that LITERALLY allow the game to be played as crash free as possible.
From that context, I would assume mods are pretty damn important for these games.
That is true, but it is also true that the script extender (and that is all that broke) is literally hacking and forcing it’s code into the game. And modern code and compiler is built to resist such attacks, if only by randomizing the needed jump addresses with every compilation.
All changes to the exe will break script extender, there is nothing that can change that. Well nothing but, maybe, a official deep plugin API for the exe and it is very unlikely that Bethesda will provide something like that.