Isn't Lucija the 15 year old girl that mysteriously appeared last month in the Croatian section with a few posts. That's what she/he said at least.
If what she says is true, her copy/pasted posts could be the result of her not knowing that it isn't allowed and shouldn't be done. That is still not a justification for doing it.
If I remember correctly someone from the community warned her and she started adding the source links to her posts, but continued in similar fashion.
Not sure what the motives of her/him are, but I find it weird that a "15 year old girl" spends so much time posting in threads about politics and in the Off-topic board.