Here is a screenshot of the post view count of a site
https://yomilfs.com I just created and have imported only 42,000 videos so far.
All the traffic is 100% from search engines. I have done zero marketing for this site. It's not even a month old.
This isn't even a special case. A year ago, I had a new site (a few weeks old) get about 10k traffic daily with about 50k videos imported from Tube Ace with no marketing efforts.