It's not very typical for pilots to push buttons quickly. Especially not the thrustreversers and engine and flight controls.
But it is entirely possible that nobody pulled the reversers while still airborne in 9 years, because it's a very strange thing to do. A bit like opening your car door while still driving 60 mph... Nobody does that in normal operation.
In airplanes, a lot of procedures and diagnostics involve not re-trying a failed action, not touching anything before reading a check list, nor flipping a switch twice if it didn't work the first time.
Non-suicide doors[1] in cars are very difficult to open at 60 mph. Between air pressure, and poor leverage, you are going to have a hell of a time doing it.
I've seen a number of videos on youtube of reversers been opened, if not fully spooled up, off the ground. It's not common but it does happen, especially in high cross-wind or otherwise iffy landings.
> But it is entirely possible that nobody pulled the reversers while still airborne in 9 years, because it's a very strange thing to do.
That's overstating the case a bit. I'm 100% a layman here but I'd agree that the behavior seems like some sort of bug. But…… some planes (typically not commercial, although the Concord is one notable exception) call for reversers in flight under certain circumstances. Additionally there are definitely circumstances where a pilot might deliberately think reversers before touchdown are a good idea.
But it is entirely possible that nobody pulled the reversers while still airborne in 9 years, because it's a very strange thing to do. A bit like opening your car door while still driving 60 mph... Nobody does that in normal operation.