I guess it is good advice, but if I stayed inside any time a storm was within 10 miles I would be indoors from noon until sundown every day, all summer long.
That said, I did have lightning strike my fence out of the clear blue sky and start a fire at my old property. My neighbor ran over an helped me put it out, but it was in the pine forest during a drought, and had it gotten out of control it would have been something like the fire in Black Forest last summer.
I moved out of the trees after that.
Oh, and I do not have lightning rods. My barn and house are at the base of a butte, and I have seen lightning strike the top of the butte many times.