fear of data recovery

You can rest assured there will be no way to access the data once the phone has been reset. Apple have designed there phones with security at the top of their list. There is an IC on the logic board called the “logic eeprom” it holds all the keys necessary to access your data, when the phone is reset so are the keys. Even the most sophisticated forensic software used by the law enforcements would not be able to access the data once the phone has been factory reset.

Think about it this way: If the FBI has to subpoena Apple to come up with a backdoor and they refuse to unlock the phone (which is possible because it is literally technically impossible since the PASSCODE IS USED TO ENCRYPT THE PHONE), there's zero chance of recovery once you reset the phone.

Apple designs the phones so that even they can't get into it if you forget something like the passcode; it HAS TO BE erased. The passcode is literally the encryption key with iPhones - without getting it from the phone's user all of the 3 letter agencies are unable to get in.