He modded Fallout 4 into Fallout London only a few months back, and it was even worse than you wrote here. Over the course of 30 minutes, 16-year career Internet gaming professional DSP:
1) Said that he attempted to mod the game before the stream and failed.
2) Said he followed the steps HE WAS TOLD TO FOLLOW (i.e. the mod's instructions) and it didn't work.
3) Ordered his chat to help him start the mod.
4) Had no idea which ideas his chat gave him were good and which weren't, resulting in him trying several solutions that were obviously wrong and/or trollish and completely ignoring a good (though ultimately wrong, see below) suggestion.
5) Decided that repairing his installation of Fallout 4 would make the mod work. (It did not.)
6) Declared "that's PC gaming" and expressed frustration that everyone else can get the mod to work and he can't.
7) Thought removing the mod from his
Steam GOG library would cause it to work.

Revealed he does not know what an executable file is.
9) Revealed he does not know how to uninstall and reinstall a game from GOG (a Steam clone, given that information see if you can guess how he might do that).
10) Revealed he was attempting to play the mod without having installed the mod.
11) Revealed he was attempting to play the mod without having
even downloaded the mod.
12) Revealed through #10 and #11 that #2 was a shitty Burger King Whopper of a lie.
Wait...didn't I write this same post like 2 months ago?