All I can see in the videos are dark shapes in the water...those can be explained by water currents and shadows cast by clouds, or even schools of fish. Other videos are in close zoom, only showing water and not the lake itself. The underwhelming response of the public watching, along with whistles shows that its much more likely amateur videographers filming whales on a tour in the ocean. When it's zoomed in, it could easily be in the Atlantic and no one would be the wiser.
What does "folable" mean? Do you mean infallible?
Anyways, at any rate, online video isn't by any means truth. If I believed the video I saw on youtube about a giant shark jumping out of the water in San Fransisco and eating a diver, and said it was rock-hard evidence because it was online, I would probably be a fool. Fact of the matter is, to be true we need real evidence provided by professionals.
The picture you provided is definitely of a dinosaur carved into stone. But look here:
Dinosaur fossils have been known for millennia, although their true nature was not recognized. The Chinese, whose modern word for dinosaur is konglong (恐龍, or "terrible dragon"), considered them to be dragon bones and documented them as such. For example, Hua Yang Guo Zhi, a book written by Zhang Qu during the Western Jin Dynasty, reported the discovery of dragon bones at Wucheng in Sichuan Province. Villagers in central China have been digging up dinosaur bones for decades, thinking they were from dragons, to make traditional medicine. In Europe, dinosaur fossils were generally believed to be the remains of giants and other creatures killed by the Great Flood.
So any stories made in the past about dragons can be explained through the fact that bones and skeletons were found thousands and thousands of years ago, and got its way into folklore.
I only accept folable evidence, so no "Evolution Facts" or "Scientist said so" things.
If you do not accept evidence or facts from accredited professionals, then by process of elimination that means that you take as true things that are unproven, that could be claimed by my aunt or anyone in the world, any theory or hoax that is online. Right? In 1 hour I could go into my programs and make a video just like the Loch Ness ones, and it would look absolutely real.