If you’re running Safari, you’re already running their OS. If Apple wants to spy on you, they’ve already got the means to do so, so you’ve already decided to trust them.
Switching to Chrome or Firefox means trusting one more entity in addition to Apple. This expands your possible exposure.
Isn’t Safari made by Apple? It’s not like Apple is some paragon of corporate virtue, why do you trust them?
If you’re running Safari, you’re already running their OS. If Apple wants to spy on you, they’ve already got the means to do so, so you’ve already decided to trust them.
Switching to Chrome or Firefox means trusting one more entity in addition to Apple. This expands your possible exposure.