That's a really poor argument. Now I entrust.... who exactly? How is this a sell for "6 months ephemeral data"?
Also, who is guaranteeing that? Who says it isn't going to be scraped? What's the point if not making historical data hard for the average user to find and easy for a malicious user to find?
You don't entrust anyone, it's simple. If you want data to last a long time, it has to be distributed, and not under the control of any single entity. Otherwise, I can virtually guarantee there will be a failure, whether it's because of maliciousness or just an accident (how many old Hollywood movies were lost because of one big fire?). (https://en.wikipedia.org/wiki/List_of_lost_films) (https://en.wikipedia.org/wiki/1965_MGM_vault_fire)
Also, who is guaranteeing that? Who says it isn't going to be scraped? What's the point if not making historical data hard for the average user to find and easy for a malicious user to find?