I think it seems appropriate to laugh (especially since it pertains in your particular life) and at the same time understand and appreciate what sort of societal stereotypes it perpetuates, which might then contribute toward less women desiring to participate in technology communities.
Personally, I am much more bothered by the caustic atmosphere created by the overly Politically Correct backlash when an insignificant implication is made...
The environment is caustic in large part because you're pouring lye onto it.
Someone took a moment to explain --- very correctly --- that using "mom" as a metonym for "technically naive" is inaccurate, dismissive, and exclusionary. That comment didn't accuse anyone of intending to do any of that. It simply pointed out the outcome of the wording. The very same comment could have been written about "grandfather" and ageism.
Nobody asked you to be offended, or to take offense.
