No, it's not. The author even mentions private memes that are in-jokes. He built a service that can be used to explore memes, but people generally don't search

No, it's not. The author even mentions private memes that are in-jokes. He built a service that can be used to explore memes, but people generally don't search for new memes in a search engine. They tend to use the search engine to find memes they already have.