This is my preference as well, but their messaging has been mixed and unclear.In my opinion if you are able to fly but a bit hesitant due to health risks and no plans for quarantine yourself then why to travel. IRCC is stating that if you have no plans to quarantine yourself then please delay your travel. If you have a job offer to grab or planning to work in a job that can contribute to society directly or indirectly then please go ahead and travel.
It would seem that they will only grant extensions for those who "could NOT" travel, though on the other hand they seem to be actively discouraging travel as well.