99 out of 100 buyers won't notice any problem.
He/she has no obligation whatsoever to "disclose" that it's not an Apple screen and there's nothing unethical about it. That's like selling your car and telling people that you replaced the battery, brakes, etc but didn't use OEM parts. You don't have to !! Aftermarket parts are completely normal too.
Didn’t think about it in those terms. Makes me feel a little better ha.
Appreciate the different perspective!