To me it's emblematic of a time when software tried to be self-contained and to serve the user, when operating systems (Windows in particular) had consistent interface conventions between programs, and when there was some consensus about what people could be expected to have.
Now, you'd probably point Grandma to Google docs. Which would be a little heavier, a little laggier, yes more capable, but also somewhere out there, a service, a thing available only thanks to the largesse of Google, a thing that can be taken away at any time, a thing that fosters dependence.
Its removal is consistent with the ongoing enshittification of Windows.