Legend Quest doesn't really fall into that realm. It is a show that attempts to draw connections between pieces of actual evidence associated with mythical objects and places. I may not agree with those connections -- so far, I think a lot are big stretches -- but, at least as far as I can tell, Ashley Cowie and his crew aren't deliberately ignoring or cutting their show to conceal facts that don't fit with their presuppositions. Instead, they're following thin threads of evidence and, hopefully in so doing, making viewers think in new directions. They're also highly entertaining when they do it. That's the true value in the DaVinci Code and for this show, too. I think that's worth doing. And I hope Legend Quest encourages others to think rather than merely believe. (Thus, my admonition to not take it too seriously.)
It's also worth mentioning (and maybe not obvious from my review) that I enjoyed both of the episodes I've seen so far. They have that adventurous, headlong quality that I admire so much in Destination Truth -- a quality that makes going out and searching for legends look like a lot of fun. That, too, is worthwhile, and hopefully it will encourage others to get the training needed to go into the field, find out new things, and do good work.
Be like Cowie. Be adventurous. Ask questions. (Even about "reality" TV shows.)