It could be a plethora of reasons, or it could be the broken mods were slowly adding broken code that eventually added up to where it breaks the game everytime more is added. Sometimes broken code isn't ran all the time and only when it's called, so one of you may have used an item that calls broken code and it'll continually compound with more issues.
2024-04-03T17:51:46 200.800 ERR Loading AssetBundle "C:/Program Files (x86)/Steam/steamapps/common/7 Days To Die/7DaysToDie_Data/../Data/Bundles/Other/Items" failed: Parent folder not found!
There are a LOT of these that follow after mods that add/change items break, which means at those points the game couldn't load that entire file otherwise it would crash, so honestly any that you see failing start looking there. Sorry I can't be more help there, you've got a LOT of mods and most of them are breaking, may want to check out the Modder section here on the forums, since they work on mods frequently and may know of compatibility issues.