I don’t know if Finland is considered native for cats but it’s against the law to let cats roam freely because there’s a very real risk of them getting injured, disease or dying. Not just from predators but from humans and cars and so on. A dead cat on the side of the road is a too common of a sight. I think the effect on wildlife is seen as secondary and the welfare of the cat is the foremost reason for it.
Should be piss easy if you followed the instructions, but people will just start connecting parts because “how hard can it be”. Then they’ll complain about how it’s broken and how the instructions were bad lol.