They're not necessarily wrong about it being scam resistant, based on some of the research into the psychology of scams. Adding time defuses the urgency of phone scams, leaving plenty of time to seek a second opinion from family members or the internet, and forcing the scammer to re-explain what the original goal was. It's too much time to breathe and defuses the fight or flight reaction needed for a high success rate. You mention URLs, but a web browser based scam page doesn't accomplish much, because the scammer's goal with fake apps is to acquire persistent remote access (akin to how the AnyDesk Android app uses accessibility permissions for Teamviewer-like remote access to an entire phone).

But yeah, it's hilarious that they're pushing this so hard when the Google Play Store still has so much malware.