An importing distinction: The author did not get himself sequenced. He had genotyping.

Genotyping basically picks out a few specific data points. Sequencing reads an entire piece or entire genome completely.

From a health perspective, genotyping pulls data points that we already know can be markers for something significant. Sequencing gets a lot more data, and would sort of be "future proof" against the need to do further testing if new markers were identified you can just look at the data already gathered. Otherwise you'd need to get Genotyping done again.