VERY well known YouTuber, JerryRigEverything. His education history is business school type stuff, NOT ELECTRONICS.
And? Auto-didactic and self-taught is more important.
There are plenty of people with wide span of interests. A hobby, education and profession can be a rational choice, it doesn't have to be a destiny.
I remember a news article from years ago about a guy in NL completing Atheneum with a report full of 9/10 and 10/10 grades. You could say this guy is a genius and should go for an accelerated university program, double bachelor/masters program, and complete his PhD before he is 22 on-merit. Instead, he choose to become a bus driver.
Suddenly he becomes “famous” tearing apart phones. YouTube “power” gives people delusions of grandeur.
Only if you let view numbers convince you so. Take people for what they say at every opportunity.
He’s no electronics engineer, he’s a bloke who’s refined the art of unscrewing things (like a lot of YouTube “engineers”)
Undoubtedly he not, as in some jurisdictions, engineer is a protected trade similar to doctor, etc. Certainly some people good in media creation and presentation have the edge on YouTube.
I comment that Apple prevent third party spares because they can compromise security (hidden silicon - look how much can be hidden inside a lightning plug! A whole microcontroller and more!)
Stuck up dude tells me to “educate yourself”.
Silicon parts ARE TINY. One could be easily covertly secreted inside a spare part. This chap clearly lacks experience in electronics.
All these Apple chaps are CONSUMER LEVEL experienced. He’s clueless. Chinese folk are very clever and can hide stuff in microscopic places (think Huawei). By being supercilious and condescending, he’s simply demonstrating his inexperience.
What's insecure about replacing a battery or display? Sure maybe a touch sensor contains a cryptographic key which is on replacement is lost. But is that the ONLY way of protecting those keys? I'm not so sure.
No, I think that Apple is doing the bigger scam for charging say X $ to replace a screen in store, or Y $ with a DIY tools kit on loan, where: 1 - Y/X < 0.1.
Oh, and don't only include the Chinese. If you've read those NSA leaked documents, there are plenty of mentions about PCs that have been pulled off transport, where the motherboards USB+Ethernet PCB connector had been replaced by a spy-capable one, so the NSA could listen to Ethernet traffic etc.
If you're really concerned about electronic security, the best way is to NOT use it. For all we know, Android and iOS have permanent microphone taps out that send all your conversations back to US.
I've a colleague/postdoc that's into research for radio systems, 6G standards, etc. This guy doesn't even have a smartphone, as he pulls his Nokia dumbphone out of his pocket. He likes working on the theory and radio systems, but doesn't like the idea of having Google always with him.