There are two other unknowns
1 Reliability of operation and consistency of smart meters (probably cheaply made to low cost spec.)
2 Just as there are power surges how do we know there won't be EMR surges?
We know that power surges will fry your appliances, and you can't protect your brain with surge switch.
I too have industrial deafness but luckily do not yet have brain activity lapse and plan to keep it that way. So irrespective of merits of arguments for and against i will always try to minimise risk whenever i can.