I don't think it will. Even though most providers offer IPv6 addresses in /64 blocks, the services you might want to scrape will consider any request coming from the same /64 IPv6 block as coming from the same user.
/56 seems to be the most common, with a few people still advocating for /48s for all connections.
Almost certainly they mean web scraping - making automated requests to websites and extracting/parsing data. It's used for e.g. getting prices/specifications of entire product catalog, or for duplicating a database that's only published in HTML.