That entire library/dataset is less than 5Mb compressed, which is barely larger than the size of modern commercial websites. An entire bible in uncompressed plaintext is only about 4Mb (compressed about 1Mb). Computers can really handle tons of data really fast; we've just become too accustomed to inefficiencies everywhere.
Yeah modern computers are stupid fast. Like 1000x faster than stuff in the 90s, but we squander all that computing power on poorly built software.