Even if everyone on the block turned it on at the same time it wouldn't hurt the x-former.
I live in a neighborhood that had a sudden building boom. Many times, people would all come home from work, turn on their stoves and ACs, and there would be a loud explosion when the pole fuses blew on the transformer on the corner. One time, there was a pretty green flash as the transformer gave up the ghost. Another time one of the high wires failed at the fuse, and there was a shower of burning aluminum...Looked like July 4.
Grudgingly, finally, the utility upgraded the lines and added another transformer, but it took years.
So..it depends on many things like the age of the infrastructure, and the neighborhood, etc. There will be places that will have trouble.
Aren't PCBs released when that occurs?