You’re right, at the moment Journey doesn’t provide a direct way to share an entire journal in read-only mode without requiring the other person to have an account. A possible workaround is exporting your journal (PDF, DOCX, or ZIP) and then sharing that exported file with others. This way they can view everything you want to share, but they won’t be able to edit or need to create an account.
It would definitely be a useful feature if the app added a built-in “read-only share link,” similar to how cloud services like Google Docs allow view-only access.
In the meantime, another simple option is to export your journal and share it through Xender APK, which makes it quick and easy to send large files across devices without needing cloud uploads.