well, here we come to the same conclusion that collaboration between mod authors and other groups/large mods is mutually beneficial (provided that authorship is indicated, of course).
but, in my opinion, you initially had a negative attitude towards those who borrow, treating them as "thieves" and so on, although in reality this may not be the case. that's why I'm writing about the negativity.
such an attitude does exist, but only towards those who take something that belongs to someone else, without indicating that it belongs to someone else, and breaking the connection with the source. and in this case, I agree that such an attitude is justified.
if the borrowing was done on mutually beneficial terms, then not only is there nothing wrong with it, it's actually a good thing, it helps everyone, and I support it.
Added 4 minutes later
the question of why it's worth "complaining" and why everyone should complain together has a very simple answer. because in our community, unfortunately, it is not customary to share links, and "stealing" content is considered a normal thing.
therefore, mutually beneficial collaboration really requires effort on our part.