I know a number of people who have been struck by lightning. It seems like you've got a decent chance at survival if you're not touching anything metal.
The rubber soles don't mean much, though. The electric current just passed through kilometers of insulation (air). It doesn't care about 2 cm of rubber.
It's the kind of story you're going to hear and remember.
Lots of rare things are not notable, nothing you would tell a story about.
Also, people could be counting near misses as being "hit by lightning"
Otherwise, unless you know tens of thousands of people there is very little chance of knowing multiple people who have been struck by lightning.