See that's the conundrum — any person moving to a new product in the future would definitely want tags and notebook info in that new app. It's the standard, but it's not a good one.
HTML is the solution I've settled on, for the last 10 years, at least. But with no guarantees that Evernote the company keeps the legacy app running, nor guarantees that they will enable HTML or markdown for export from the new app before they sunset the legacy one, I don't feel comfortable with this situation.