I personally find it extremely rude when people have 'Don't send trades like this' in their rules. Regardless, the user was likely new and trying their best to offer a trade they thought could be fair. COPPAs in general are often children under the age of 13, don't mock them for trying

I think linking bad trades in rules should be banned honestly, it just bothers me. Heck, I didn't really learn my rarities until late 2013! When someone joins is just a number, not a measurement of knowledge