Disabling iOS Personalized Ads tells kernel to kill daemon every 3 seconds

Divide and Conquer.

Millions of users against •one• company.

Resistance is futile. Users adapt.

Another cause is that Apple and Microsoft are now service vendors, and they want to sell you subscriptions to Apple {Music,Arcade,TV+...} or Xbox Game Pass, and they also have app stores where they want you to buy things. The services and apps aren't necessarily bad, but everyone doesn't necessarily want every service, and they add more daemons which seem to run even if you're not using the service.

Managed systems for companies and schools also seem to add more daemons to the OS, even non personal, non-managed systems.

Finally, security has been a terrible issue, since mainstream operating systems and apps were not designed to be secure (which admittedly is very hard! and threats keep evolving) and customers have largely voted with their wallets for features and performance over security and reliability. Apple and Microsoft have tried to become more security-conscious but this has also made the systems less usable and added anti-malware daemons that do annoying things like phoning home to check if an app's developer certificate has been revoked, or repeatedly re-scanning files to see if they match a newly updated list of malware signatures.

The fact that a jailbreak is even needed to actually get full ownership of your device that's "sold" is laughable. And we have people fighting and demeaning people for demanding the full rights to devices they supposedly own?

Apple fraudulently "sells" rentals as if they were a purchase.

Ad tracking should be so high up in the stack that for a change that far down to cause issues then far more significant issues should be occurring at all.

If your system has to be balanced juuuuuuust right to function it's a poorly engineered system.