I'm. Not objecting to giving a dog a job, or that working on something like this together can improve the dog/human bond in a lot of ways but. That doesn't mean the dog will suddenly develop brilliant recall in all situations.
And this person (did someone mention they're claiming to be a retired police dog trainer?) clearly doesn't know the difference between tracking and SAR.
A lot of civilian SAR dogs in Norway get called out for finding people in snow. Which is different than a bloodhound trying to track a lost kid in the woods.