The bar for Confluence isn't Google Docs or OneNote. It's Notion or Coda. After using Notion I can't go back to Confluence, for the same reason I can't go back to any Atlassian product - it's way too slow and the UX is too convoluted.
Two things bother me about Notion as a documentation platform: no “plain” tables, and the potential for infinite unnecessary complexity with its databases.
I love notion, but as a company-scale doc platform I don’t think it’s there yet.