Zillow Not a Reliable Source for Prop Mgmt?

[Bailey A.]

I'm speaking to all property managers out there who can help me understand this. I just let my manager know that my friend contacted them through Zillow about my listing. Its been a week since she's heard anything back (naturally, I thought that was a point of concern). When I mentioned that I was wondering if potential leads were slipping through the cracks/not being followed up on he said "Zillow isn't a trusted source" and he could go on for hours about the topic. Can ANYONE shed some light on this?

At this point I'm thinking "Wait, what about the other people who could've reached out through Zillow over the past 5 weeks?". This doesn't make any sense.