Absolutely. It seems like a risk to create a KB in Hubspot and not being able to export if need be (e.g our own backups, easy access in places with limited/nonexistent internet access). A nice added option would be exporting by cathegory/group.
I agree with @MissTipsi that this is needed internally for our service team, not for clients reading our articles. If this was to be available for clients too, I hope it would have an option for us to disable it.. 