It's common for people to complain enough to get free or comped stuff they did not deserve at any point. As the saying goes, the squeaky wheel gets the grease, that doesn't mean that's where the maintenance should go.
I don’t know how much a typical canceled flight is in lost revenue but I suspect it’s much lower than what Alaska Airlines and others are dealing with now.
No doubt, given Alaska grounded all their MAX9 since Jan 5, and the FAA grounded all other MAX9 fleets the next day, they are still grounded to this day as far as I know (United has extended their cancellations to the 26th so far). That's some 170 planes not flying their routes or earning money.
Although the FAA has apparently completed their inspection of the initial batch of 40 MAX9s.
Just humans(meat) and a highly flammable jet fuel in a tube.