My wife is totally non-tech, she went from 98SE to XP to 7 to 10 without missing a beat. She uses the same programs she’s always used, except she is using the Edge browser, which is way better than IE (though it doesn’t support extensions yet, however, she didn’t use any so that didn’t matter).
I don't use IE and am mostly happy with what I am using.
I have NO idea what an "extension" is and doubt that I use it.
My s-i-l ( the TECHIE expert ) attempted to get me to get me to buy an iPad. I fought him tooth and nail, so he handed me his and told me how to use it. This turned into a complete and utter FAIL on my part.
I'll NEVER read anything but a hard copy book, I still use a fountain pen to write letters and yes, do still use snail mail. I have an iPhone, which I was talked/cajoled into getting, which is turned off 99.8% of the year, as I prefer a landline. And you imagine that I will, as your wife has done, take to Windows 10 with NO problems?
BWAAAAAAAAAAAAAAAAAHAHAHAHAHAHAHAHAHAHAHAHA !