I just asked this question about whether or not a rock I found is an arrowhead and it was closed as opinion based.
I don't quite get that both since no one has suggested that it isn't an arrowhead and there are other similar questions on the site.
What are these rusted metal objects found on a beach?
Scat Identification on Upper Yosemite Falls Trail
In fact, none of the other 60+ identification question on the site have been closed as opinion based.