I got asked this after last Friday's blog post on plagiarism in the Pagan blogosphere/FB universe. The question make me giggle.
Nope, if there is ANYTHING you can count on among Reconstructionists is that they cite their sources. And demand to know the sources of others. They will delight in telling you which Homeric Hymn they are reciting, where in the Táin Bó Cúalnge a reference comes from, what Snorri wrote down about this, that, or the other.
It's not to say that they eschew all UPG, but that they consider scholarship a virtue that should shine forth in their lives and practice.