At $DAYJOB we sponsored a hire from another country recently, and their new landlord wanted an email address instead of adding them on WeChat/WhatsApp. It was a culture shock. They created their first email account in 2020 at age ~30.
Email has been EEE'd by the big players - e.g. Gmail conversations and labels don't work properly in plain IMAP (extend) and they block messages from independent mail servers (extinguish).
Email is obviously still popular, but I think it's fair to say most people do not use it. Email is for receipts. I think its demise is closer now than at any point in the past.