As of now, I have found no other solution or way to fix this issue.
As you've said, something might be outdated in my main folder. However, that is untrue as I've personally checked and gone over every file folder I could see that might be outdated. RageNativeUI was outdated from many months back, so I thought that might be the problem. It turns out that it wasn't the issue, the game still crashes while loading in with SHVDN. I even cleaned my entire scripts folder to make sure it wasn't a script mod that was causing the crashes. I'll keep trying it out every day in the hopes that it will eventually work because if there isn't anything intrinsically wrong with it, then I must be doing something inherently wrong. Or, Occam's razor here, the mod itself is entirely to blame. This comes completely out of nowhere, as only with the newer version and update (drug wars) it started to cause loading screen crashes.
Before the update, it was working fine, with no issues, and no crashes. Not a single thing was wrong. Maybe I've exhausted all my options, and others will relatively feel unaffected by my issues as theirs are working. As of right now, it seems there is no solution but to stop using it.