That was an iPhone 5C. These didn't have Secure Enclave inside them, and it still wasn't an easy feat to access the device - they probably had to disassemble it

That was an iPhone 5C. These didn't have Secure Enclave inside them, and it still wasn't an easy feat to access the device - they probably had to disassemble it and copy the flash storage straight from the chip to do it, unless they've used an unreleased 0day. If it were an iPhone 5S (3 years old) or newer, they wouldn't be able to access the data on the device at all.