I will now have to pull my foot out of my mouth, and admit to being the mom of an almost-teenage-girl. She complained non-stop about using the Chrome and Google Docs all during the school year, and now that it's summer vacation and she can sleep in in the morning... she has now informed me that she actually likes Google Docs. Both ds and I were surprised considering how much she's complained about it! So I asked her specifically what she likes about it, and her response "Because I know how to use it!" ... so there you have it... proof positive that my dd12 is not really reliable for advice on much of anything at all! Sorry to have suggested that she might have some relevant info (picture me banging my head against my outdated laptop lol!).
I don't think you have any reason to apologize. Your DD has raised a legitimate point about technology. We all feel FAR more comfortable using the tools we've learned. It's not fun to have to re-learn skills we've already mastered.
That's a major reason why MS Office became such a mainstay. Large corporations, for example, have thousands of users who all know how to work it. Any calculations on replacing it with a cheaper (or free) substitute in business has to also account for the cost of retraining workers, decreased productivity, and increased error frequency.
