Do You Unplug Equipment During Thunderstorms?

I had lightning strike a tree to the side of my house, it travelled across granite underground to to rebar in my foundations, jumped to internal power, ethernet and coaxial, took out every router, pc, tv, amplifier

Yes even with a whole house surge protector. 

If you’re not home then obviously not possible. So best to have plenty of protection in place (which I do).

Yes.

Power lines buried in my neighborhood as well, still, I presume strikes on power lines somewhere else on my grid could have effect.