Just to be clear, the file meraki_info.py has the lab_org variable on line 10 clearly marked as "DO NOT MODIFY" in comments above and below. You are not meant to change that to your own organization ID along with kit_org on line 17.
This documentation was put together first for Meraki/Cisco SEs to demo, and from the recording, you'll see that the lab_org is a "dumping ground" organization where networks are created on the fly and then deleted as part of a demo. The Alexa "delete all my networks" command will only call the lab_org, never the kit_org (unless you happen to modify that code as well).
Solutions Architect @ Cisco Meraki | API & Developer Ecosystem