Yeh, at those currents, doesn't really even matter where the current path is!
Parents had an instance a couple years ago, struck a neighbor's tree I think? Knocked out a couple devices including, what was it, a cable box and a router or two, something like that. Reasonable enough; CATV and networking cables make pretty big loops against each other, or to mains wiring, in many installations. (Which, it's an old house, wiring is everywhere.)
Shouldn't have any effect on strike frequency, anyway; the moist tissue keeps the whole tree very nearly at ground potential, allowing the same electric field as a many-leafed lightning rod might.
Not that that's helping put your mind at ease...

Tim