I would find out the name & brand details of any product in question, then web search that information for the facts..
Its hard to know if a statement like that applies to the newer devices, or the older ones , or the place or person that inserted them...

some devices are reliable & some maybe not be as good..same for drs & providers..

There are pasts posts on SCS but for our search tool you need to use spinal cord stim.. (needs to be more than 3 letters)..

complaints about SCS units - Google Search

For me something invasive like that would depend on my pain levels and if meds /side effects are too bad to continue with those..