I will absolutely second this assertion! But not through voluntary testing!
While I will never doubt that others have wildly different experiences (you have my sympathy @Customer!!) this feature has been the one cosmic redemption factor for me personally and Wyze cameras.
My current cross to bear is two remote sites with flaky internet feeds which work wonderfully until they randomly drop offline at widely varying and unpredictable times.
So far I have always been able to go back and review the continuous SD card recordings for the full downtime once I am able to get to the site.
The longest time I recall was somewhere between 24 and 48 hours, which occurred little over a week ago.
If Wyze cams ever lose this ability, there will be nothing but a trail of dust behind me as I head elsewhere…