Airline passenger rights (tarmac delay) legislation

Now that this legislation is in place from the Department of Transportation.... the airlines response is clear! You wanted it, you got it. Be careful what you ask for.....
The airlines have cancelled hundreds of flights due to weather and storms in fear of big fines (about $4.4 million for a fully loaded flight). They fear pushing back, getting in line to clear a take off, maybe the arrival airports have reduced arrivals and spaced more.... and then not being cleared in the time frame allowed before a fine. So, not to take the chance and to save labor, they just cancel the flight! This practice will only increase.
The passenger rights bill was intended to limit delays without being allowed to disembark, provide water and restrooms. It's realized function will frustration to accommodate cancelled and waiting days (maybe) to get to your destination.