Right, I recall news from years ago where a bunch of celebrities’ very private photos backed up to iCloud were leaked. They may or may not have known they uploaded those to iCloud, I dunno. But imagine what’s up there if you don’t realize you’re doing a backup. Not just photos, but like scanned documents with vulnerable information. And all that personal info in a centralized server is a big ol honeypot for a malicious actor.
It’s not hard to see why this is a vulnerability, is what I’m getting at.