Not true. https://www.canada.ca/en/immigration-refugees-citizenship/services/immigrate-canada/family-sponsorship/spouse-partner-children/spouse-common-law-partner-canada-open-work-permit.htmlYou can't apply for OWP if you're out of status in Canada.
You don’t have valid temporary resident status
If your permanent residence application is being processed under the spousal public policy, you must wait until you’ve received your approval in principle letter to be eligible to apply for an open work permit.