Microsoft Teams comes out of the box with the necessary SharePoint like features for document collaboration. That includes editing right in the web browser, as well as a button to open the document in your local install of Office. You can see if the document is synced online, look at changes, comment, and merge changes. Everything you need for a decent experience. No longer a need for setting the whole thing up yourself, and non technical folks can definitely use it.

You still have some pains with it, but its better than anything else I have seen for a non technical user.