The benefit of this also fixes bugs. Weather.com bugged on me because it uses supercookies, it would send me to the wrong link when I clicked in the search bar for my saved location. Had to manually go through and delete all the copies of the same cookies in local storage and other places they put it.
The next step is for Firefox to finally adopt torbrowser, and natively support not allowing fingerprinting by default.
Offtopic, but since you brought it up and outed yourself as a user, what's the appeal of weather.com vs weather.gov? The .com collects and sells your data with 3rd parties and I'm guessing they get much of their data from the national weather service anyway. Is there some service/feature that draws you to them?
The next step is for Firefox to finally adopt torbrowser, and natively support not allowing fingerprinting by default.