I think the ad people are simply talking up the features that are standard to every GFI these days.
Most every GFI will die if it gets a substantial voltage surge; this is not to be confused with meeting any 'surge suppressor' standards that exist ... standards that are not mentioned on the package.
Sure, this 'protects' you; but the hope is that the device will survive, and continue to protect you, after the minor little spikes.
Likewise, the most recent UL standards require GFCI's to either have an 'end of life' indicator, OR fail to reset if they're not working.
