Does anyone have any idea why this only affects the money and age stats files, meaning they can be displayed and set twice? Because all the other stats behave as Icebird described? As soon as they disappear from the vinBase folder, they are no longer considered in the game and therefore no longer exist. For example, if you move or copy the perversion.LPstat from the folder, no sex scenes will be started, and the functions in the mods that could trigger a sex scene will be grayed out.
If you see multiple age or money parameters then it seems you corrupted your character files with the duplicated lpstat files somehow. I don't know normal method to remove duplicated variables, only if you edit the affected character's file outside of the game (notepad).
The player only stats like money stored in your character's lpcharacter file, the global age stat stored each individual lpcharacter file. So to check the game has ok you need start a new game and check if this parameters are working as intended. After that you can edit back your characters in your save slot folder with removing duplicated lines within. Money will be easy, because only your MC has it, age will be difficult if you have a lot of characters already.
Make sure you have not .lpstat duplicates (anywhere) under the modules folder before you start or continue a game.
About LL mods: they wrotten to work on the lifeplay 4.x series, I don't recomend to use that mods in the lifeplay 5x versions.
And again: avoid poking files under \Modules\vin_Base\Stats\ folder. They intended to set the game's basic parameters and almost everything depends on them. Mods - like the PornEmpire versions - extends global variables with own stat files with they own parameters and only works when the mod is active and when it is inactive then not affect anything. Other mods - like the SB's pimpyourgirl - overwrite some basic stats with they own parameters (like pornfame.lpstat) what cause rest of the similar mods which tries use that stat a headache, in some cases rendeing them unusable.
Thats why important to keep the dev's original files in they place. (Fixes are an other story, players can choose to overhaul with specific mods or use a file overwrites. But I didn't seen any what tried modify the lpstat files, fixes made in lpscene files exclusively)