Aw come now Mort, give em a break.
There is no denying the stuff you posted has vastly more substance than almost all else that was posted here, but is that really the point? Remember you're on an Elder Scrolls forum, not a metal one haha. There is a time and a place. These guys were jus looking to sit back and hear a cheerful folky tune to get their spirits up for Skyrim, not some deep musical discussion. Not everyone knows about bands like Enslaved, Graveland, Kroda, Falkenbach, Windir, Thyrfing, Satanic Warmaster, Ulver, etc. , we were all there at one point. Even if most folk metal isn't the best music out there, don't tell me you don't enjoy a drunken viking jig every now and then. Let them have their Fintroll and Ensiferum, you gotta admit that that stuff is still by far better than 99.5 % of all other music out there.
By all means expose them, but no need to act like an elitist dike right?