With Frontier/Spirit/Allegiant, I guess the cheap fares come with a lot of caveats. Particularly annoying is the lack of commitment to rebook on another airline if a flight is cancelled or significantly delayed; given their already-sparse route networks rebooking on the airline could mean multiple additional days away from home, with hotel at the passenger's expense for Allegiant and Frontier.
With all airlines, though, the only thing covered within this dashboard is "controllable" delays, and that's not terribly well-defined. If you have a crew on a 3-day trip, and on day 1 they get affected by ATC or weather issues that result in them not being able to crew your flight on day 3, is that considered outside of the airline's control? If so, none of these protections apply.
Frankly, the US needs to pass something comparable to EU261 or
Canada's Air Passenger Protection Regulations. These are
significantly more comprehensive than what any airline provides by-right today, including some protections when a delay or cancellation is outside of the airline's control, and the protections apply to all airlines within the respective jurisdictions (though Canada's do have lesser protections for small airlines.) These should ideally also apply to intercity rail and bus transportation, though opening that can of worms (particularly on the bus side) would be tricky.
The dashboard is nice, but it's laughable to me how this is anything other than proof of how weak our regulatory system is in America.