AF447 was 10 years ago. there are literally thousands upon thousands of these things in operation every hour of every day; if it was a defective design, planes would be crashing twice a day.
it’s going to turn out to be a maintenance issue. this device gave ample warning it was about to go out, and the the discount airline discounted them all.
In the case of AF447 it was more a case of bad piloting.
Airbus had a very aggressive pitot tube replacement program after AF447.
There was only one crash, AF447, but many reports of erratic air speed indications in A330/A340 aircraft.
We don't know yet if there have been any other reports of erratic airspeed indications on other B737 Max aircraft.