...Manual install can be much easier(not that much comlared to a mod manager) only if you know what you are doing and provided you do it correctly which is why im not recommending it for newbies
Never said that it's too complicated i just said that i wouldnt recommend it to people who are new to modding
The extraction process has nothing to do with what im saying it's what happens after that which causes issues...
Manual mod install for KP is in fact much easier as it's a 1 step thing compared to a mod manager which you need to learn to use and has many steps in order to set it up correctly.
You're not recommending a 1 step install for newbies because of your assumption that they "need to know what they're doing"?
All they need to know is to either DragNDrop the mods into the base-game or extract it directly into it. There's nothing more to it than that for KP.
Another assumption of yours is that it may cause issues later on? If you somehow fuck up a 1 step installation that even my grandma can do, that's completely on you.
But, a mod manager can cause more issues for newbies if they "don't know what they're doing", one of the common things I've seen them complain about is their saves being gone after they use mod manager or that the mod manager isn't detecting their game at all.
And I've already said this, most issues people face regardless of their installation method are due to version mismatch, missing dependency or a bug with the mod or game itself.
You couldn't even show me a single conflicting mod, all you mentioned was a lack of mod compatibility in the past on a mod that hasn't even been officially updated for years.
Not that this has anything to do with installation methods either, it's an issue with the mod itself which doesn't require a mod manager to figure things out nor does it make it any easier on this game with how the mods work.
Edit: I'll do it on your behalf, the one example of an actual conflicting mod in the past was Cut-in Animations Loop and FastCutins since the latter mod required a newer version of the APNG plugin whereas the first mod was a replacer that was still on the older version of the plugin. Which should be hopefully resolved now.