The thing is google asked people to report URLs that were scraping sites and were outranking original sources, so this guy posted a snapshot where google was scraping wikipedia to come up with definition of 'scraper site' and was outranking wikipedia. :P
Wikipedia content is licensed for redistribution. That isn't scraping.
And as a site that is funded by donations not ad revenue they probably consider this a service.
yes, Wikipedia content is licensed for redistribution but the point here was websites outranking the original sources.