Up through the mid-2010's, people posted amateur porn largely for personal fun and ego boost. Occasionally, regular people would try to make a buck. But it was mostly people posting selfies to /r/gonewild because they enjoyed the attention. Then OnlyFans came out, and now virtually anyone posting amateur adult material can be assumed to be driving traffic to a monetization channel.
Sorry for the tangents. It just strikes me how normalized "side hustle" culture has become. It was not very long ago at all that it wouldn't even occur to most of us to question a DDOS attacker's "motive".
There are dozens of sites like this. I even came across YouTube channels with thousands and thousands videos that created slideshows with elevator music that presented SO question and answers one sentence at a time. You can convert SO posts to blogs fairly easily and they rank.
I am going to guess that some people are trying to scrape the stack overflow data to make their own spinoff blog versions of it.
An interesting thought, but it doesn't fit with the description provided by SO of an evolving DDoS attack that originates from different networks in response to mitigations. It's not scraping. It's an attempt to deny service.
They are not scraping. The secondary economic exploitation is expected. The copy sites (attempt to) capture value that the primary is unable to.
Despite Google becoming worse overall, I noticed that the copy sites are consistently ranked lower than the original. What is your search engine experience? I have not encountered a robo Youtube video as you have described.
Edit: maybe someone's scraper was too efficient.