My son is a lifeguard and you would be surprised at the adults who get mad when they pull everyone out of the pool when they hear thunder. If they hear thunder everyone comes out of the pool for 15 minutes.
As for the taking a bath thing, I think back in days past when everyone had cast iron bathtubs and iron pipes it may have been more of a danger. If lightening struck a tree nearby and it traveled to the pipes it could get you in the bathtub. But now most tubs are some form of plastic as are pipes. I don't go and take a bath when a storm is raging but I have taken a bath when it is thundering.
My sister-n-law's brother was struck by lightening last summer through a fork he had in his hand. He was outside on the deck trying to get the steaks in off the grill before it started storming and it got him with the fork. He was okay and just a little stunned.
When I was in high school I went to the beach with some friends. A storm was blowing up one afternoon like it does in the Florida panhandle and we were out on the beach walking around. We noticed our hair standing straight up and thought it was the funniest thing. I have pictures of us that way. Then one of us realized that this happens right before lightening strikes.
Boy I have never run for cover so fast in my life.
As for the taking a bath thing, I think back in days past when everyone had cast iron bathtubs and iron pipes it may have been more of a danger. If lightening struck a tree nearby and it traveled to the pipes it could get you in the bathtub. But now most tubs are some form of plastic as are pipes. I don't go and take a bath when a storm is raging but I have taken a bath when it is thundering.
My sister-n-law's brother was struck by lightening last summer through a fork he had in his hand. He was outside on the deck trying to get the steaks in off the grill before it started storming and it got him with the fork. He was okay and just a little stunned.
When I was in high school I went to the beach with some friends. A storm was blowing up one afternoon like it does in the Florida panhandle and we were out on the beach walking around. We noticed our hair standing straight up and thought it was the funniest thing. I have pictures of us that way. Then one of us realized that this happens right before lightening strikes.
Boy I have never run for cover so fast in my life.
But you might not realize how serious it is if your not familiar (as we weren't).
I don't know how far away the lightening was, but it was really scary.
Maybe just chalk up the rudeness to being a newbie and not used to the friendliness that is usually shown on these boards. 
I am glad OP started this thread..