In theory this is cool.
I am confused about any practical applications
Hold on there, Hoss. First the theory, then the Tang! ;-)
Gravitational waves apparently have some influence on atmospheric phenomena here on earth. See https://apod.nasa.gov/apod/ap220313.html?fbclid=IwAR3ZqAdcj6pd3ccCDWv59L4PPXyrd4dq7IW5I8hcpCPsvhDHMlQi6SGeNrs
Hence, observation of changes in gravity wave rates might aid in making more accurate weather predictions.