For most uses, Docs and Sheets "work". It is extremely easy to create a basic collaborative table or document. So long as you aren't stressing the sync features, everyone is on the same page.

Where G-Suite suffers is in the random features that a small segment of power users swear by. The keyboard shortcuts aren't the same as what people learned in Word/Excel. There are many incompatibilities and rendering issues with the Excel and Word formats. But these concerns apply mostly to advanced users; for basic documents, letters, lists, and tables, G-Suite in 2018 works well