Even if you were affected, it wouldn’t explode in your face.
"poses no safety risk" is a fairly high standard when discussing incorrect battery management.
If that’s not enough, you could try Apple support. They have many options short of Genius bar. Email, chat, phone, and the Support app. Maybe one of those will help.
Maybe think of it in terms of aeroplane engines - do you go for the latest and greatest, or the tried and tested? How can you be sure that a replacement battery won't be worse after x weeks?
You are responding to a straw man of "I want a guarantee that my device will never fail"
Got in touch with support and they claimed that the manufacture date was outside the applicable range (doesn't make any sense since it's custom built). Will have to escalate to someone higher up since it seems that the lower level staff aren't even aware of this program yet.
> The serial number you entered is not eligible under this program because either:
> • It's not in the affected serial number range.
> • Our records show that your battery has already been replaced.
> • Our records show it's no longer eligible for a free replacement under this program.
> If you have questions, please contact Apple.
If even they don't know which one of these three options apply to the serial number that I have, what hope is there to guarantee that my computer will not explode in front of my face while I am working? I bought mine during the time frame mentioned in this page, custom built (upgraded RAM and disk capacity), and never had taken it to an Apple store for repair (which means, option #2 doesn't applies). I wish there was a better way to double check if option #1 or option #3 apply to my device, other than scheduling an appointment with their "Genius Bar" which usually takes several days.