The trail is steep and narrow in parts with switchbacks, and most of the people who took the gondola up (and were planning to take it down) wouldn’t be prepared or dressed to hike down it in good weather, let alone bad weather. There would have been a lot of twisted or broken ankles if they tried.
I’ve been at SSV in Banff in the summer when they had to shut down the gondola because of a lightning strike until they could inspect the electrical systems. Since gondola towers are tall metal objects and we get plenty of thunderstorms in the summer, it’s not surprising that it happens. Probably more surprising that it doesn’t happen more often.
It only made the news since it’s a big tourist attraction and that’s the only way up & down. When the SSV gondola shut down, they got people off and then had a few buses and other vehicles that they shuttled hikers up and down the 5km access road (which is the ski out in winter) or people just hiked the extra 5km. Never even made the local news!