Huh? Can you please, concretely, elaborate on how this app makes it easy for other "rogue apps" to access your personal data? Or how is this any significantly different from iCloud Find my Friends feature - especially since iCloud has very interesting exceptions for privacy data collection in EULA.
Or if I say it differently - if you actually read EULAs and what both companies collect, there is no privacy difference between Apple in Google when it comes to cloud services.
The raised concerns about tracking are VERY valid - but they are valid (as you said) for both platforms and calling iOS as "more secure" in this respect is extremely misleading and gives false sense of security. After all, iOS ships the feature BY DEFAULT, thus creating all the pressures you mentioned. Android doesn't.