There is nothing in the rules that says your PR will be revoked if u use your country passport. You just can not use it to go to your home country thats all. Lets be guided and not spilling out falsehood.
The rule simply states that if someone renews home country passport, uses home country passport, and/or visits home country, it can be argued that they have voluntarily re-availed themselves in protection of their home country. If the case is pursued and results in the protected person status being terminated, that in return terminates the person PR status under current law.
Whether IRCC and CBSA goes after people for simply renewing for using home country passport (without travel to home country) can be a different discussion. I myself only saw cases where cessation happened due to travel to home country. I never came across a cessation application just because an individual renewed or used home passport to travel to countries other than their home country.
Not encouraging use or renew of passport considering that current law sees these actions as re availment which means IRCC and CBSA can technically try to cessate the status even if there have never been such cases in past.