Maybe because it's more than a freaken Internet story.
My sister knows Dr. Ron Charles Historian and Archeologist who has been to the site of the Ark on more than one occasion. He has seen the same things you are seeing in these Internet videos, and much more. He and his wife stayed with my sister while they were speaking to Churches here in the Northwest on the Ark discovery and other projects throughout the world he is involved with. He is back here again in June, and my sister has invited me to listen to his lecture and maybe visit with him in person.
Well, as compelling as I'm sure that should be, you'll excuse me if I continue to be skeptical. I don't know who Dr. Charles is, nor is he mentioned during the press conference from the thread's link, but if he's connected in some way with this, and he's a legitimate, trained and recognized archeologist, I'm sure he'll be publishing his findings & data. It is from the publication process that real scientific discovery is measured and validated, not YouTube.
Until those findings and data are published, I would suggest that a HEALTHY dose of skepticism is in order. Don't take my word for it, take theirs...