Me neither, but it simply references pop culture and other franchises/films and their knowledge isnt critical.
This mod is a masterpiece, with soo much content. Hell it has more weapons and enemy types than the entire XCOM franchise combined which is quite impressive.
The mod will also start out earlier than the vanilla and your first enemies wont be aliens that will one shot your soldier from full health but other humans or hostile monsters (That are melee, so fighting with them is a case of positioning and movement). And other humans will use human weapons so trading blows is actually a thing and not one shots on both sides and i find the early to mid game to be the best part of the mod. Where you feel each armor upgrade, going from kevlar vests to full military-grade armors, to full body heavy armour that reflects bullets left and right, turning your men in to a army of robocops as they march trough cultist outposts mowing people down with miniguns, mortars and automatic shotguns.
Though you might reconsider playing on the hardest difficulty, this mod will crap down your throat, Duke Nukem style because it really doesnt hold its punches. Some later missions, throwing + 60 enemies isnt a rare sight. Grenades will be one shotting your men across the map, creatures will one or two shot them in melee, your tank gets wrecked by a creature poking it with a spear three times. This is on top of having agents less disposable (You are meant to build them up overtime, so losing them is a considerable set back, though this mod also ofsets that by having better variation or just stronger variation of armours, like the end game armour lets your soldier eat heavy plasma hits without dying).