sorry but I think you misunderstand. Unreliable airspeed does not trigger the OEB actions.
But the protections will happily stall the aircraft into an unrecoverable state in case of an unreliable airspeed which senses an overspeed on 2 ADR's.
Unreliable airspeed and you think it's a brilliant idea to just shut down 2 ADR's completely at random losing all the airspeed data.
I'll have that shiny red button any time of the day.
That A330 captain could have turned off 2 ADR's, but he didn't. Why would he have pushed the shiny red button?
In any case it would be a guarded switch that requires confirmation of both pilots, versus one pilot just electing to switch off some ADR's........