IIRC during the storm when they guy in SYD was struck the Weather Bureau reported that the lightning strike count within the airport perimeter during that storm went over 4000.
As you saw in the Copa clip strikes can happen in 'apparently' safe conditions.
As a study into the ramifications of ordering or allowing people to stay outdoors during thunderstorm activity the MOCK TRIAL trial of a real QF Duty Maintenance Manager was held at the QF SDT. It was conducted by real lawyers and Police prosecutors. The DMM was accused of culpability arising out of the death by lightning strike of an apprentice engineer who was out on the ramp during a thunderstorm.
I can tell you that after that little glimpse into the legal process the storm warning & ramp clearance policies were strictly adhered to during every future instance.