Just a comment here to say that I had this exact issue. High CPU utilization (100%) for hours and hours, after an Evernote update.
Mac OS Ventura 13.4.1
Evernote 10.58.8
What fixed it was:
Remove Evernote, and select to remove all your data (as described in earlier posts)
Then uninstalled Evernote entirely from the system (Note: Used App Cleaner to uninstall).
Reinstalled EN from App Store.
All is well now.