Fictitious example of non-sense for those who need a drawing!
Let's take the original rk_Art_items_Shop 1.0.5 mod, for example:

Now imagine yourself searching for this mod on a forum, it's usually between 10 and 15 results per page. Not to mention that this mod and its copies will be mixed with other mods that also have copies, all mixed in the same category. So, instead of having only 10 unique mods where everyone contributed, we have 100 mods (10 unique mods and 90 copies).

Are you going to try all of them to see which one is the best and risk to bug your game...

Then you have more than 45 similar mods, containing some differences or not, to try (list below).

Michael_rk_Art_items_Shop. v0.12
Christopher_rk_Art_items_Shop. v1.654
Matthew_rk_Art_items_Shop. v3
Tyler_rk_Art_items_Shop. v1.6
Brandon_rk_Art_items_Shop. 2022
Daniel_rk_Art_items_Shop. v1.2
Ryan_rk_Art_items_Shop. v1.6
Justin_rk_Art_items_Shop. v3
Aaron_rk_Art_items_Shop. v3
Dylan_rk_Art_items_Shop. v1.2
Benjamin_Art_items_Shop. v1.64
Nathan_rk_Art_items_Shop. v3
Sean_rk_Art_items_Shop. v1.644
Mark_rk_Art_items_Shop. v1.2
Alex_rk_Art_items_Shop. v0.12
Gregory_rk_Art_items_Shop. v2.4
Carlos_rk_Art_items_Shop. 1.64
Nathaniel_rk_Art_items_Shop
Mitchell_rk_Art_items_Shop. 2022
Ethan_rk_Art_items_Shop
George_rk_Art_items_Shop. v1.2
Jorge_rk_Art_items_Shop. 2022
Jake_rk_Art_items_Shop. v0.12
Angel_rk_Art_items_Shop. 2022
Phillip_rk_Art_items_Shop. v3
Colton_rk_Art_items_Shop. v3
Derrick_Art_items_Shop. v1.64
Alan_rk_Art_items_Shop. 2022
Dominic_rk_Art_items_Shop
Julian_rk_Art_items_Shop. v1.2
Jonathon_rk_Art_items_Shop. v3
Philip_rk_Art_items_Shop. 2022
Edgar_rk_Art_items_Shop. v2.4
Dennis_rk_Art_items_Shop. v0.12
Tony_rk_Art_items_Shop. v1.2
Cesar_rk_Art_items_Shop
Raddeck_rk_Art_items_Shop 1.0.5
Preston_rk_Art_items_Shop
Pascal_rk_Art_items_Shop. v2.4
Francis_rk_Art_items_Shop. v1.2
Kristian_rk_Art_items_Shop. v2.4
Bertrand_rk_Art_items_Shop
Denis_rk_Art_items_Shop. v1.2
Antoine_rk_Art_items_Shop. v0.12
Armand_rk_Art_items_Shop. v2.4
Arthur_rk_Art_items_Shop
Leo_rk_Art_items_Shop. v0.12
......

Unfortunately, 90% of the above people are not real modders, so their mods will not be maintained and will not be able to offer help because they only know how to 'modify' but not code.

So, where's the point of not contributing???