Why single out their mobile web site? The non-mobile site is just as wretched. I just tried it and it took 24 seconds to finish loading (17 seconds before it was useful). Over 300 round-trip queries, and I have all ads and trackers disabled.

They obviously know how bad their experience is because they throw up an animated splash screen while waiting for their page to load.

I'd assumed that was at least somewhat intentional, to encourage use of the app.