To be honest... None. It's a choice. You might wholly disagree, but recent events aren't enough to get me to switch yet, because I think the competition has too many tradeoffs. I can get my photos scanned against a CSAM database... or I can have Google tracking my location constantly regardless of what they say (as they've been proven to be misleading in the past)... or I can use a Linux phone and say goodbye to batt…
macOS has been announced to scan just like iOS
On iOS and iPadOS, they will implement the iCloud Photos CSAM scanning, but Apple left out macOS as having that for now. Rumoredly according to GitHub reverse-engineers of the system, it's due to the mathematical precision of the NeuralHash algorithm being processor-dependent on ARM and not Intel.