The FBI demonstrated during the San Bernardino shooting investigation that Apple must purposefully put backdoors in their devices, as the FBI was able to independently crack the phone, which isn’t possible without a backdoor or a security flaw so poor that a third-world hacker could access it with some level of effort or knowledge.
Do not trust Apple with your privacy, even less so than Google. At least Google will allow you to see everything they’ve collected on you and prevent random bad actors from accessing your data, which is something we can’t be sure of with apple. This isn’t about which is the more moral company, it’s about which is more dangerous to the consumer. Complete lack of control over your computing environment will only make sense in cases where you’re expected to have a complete lack of knowledge of computers and someone else does the thinking and manages your device.