Offgassing from XMAX Starry 4

Simply provide your email address and see what happens. Your use of the term "demanded" is loaded and likely the tone you read into it.

IMHO they asked your address in order to send you a new unit.
If for whatever reason you don't want to share personal informations with them, send them your nearest collection point address and see what happens. If you don't want to share your name, try with a company name if you have one availabe from a friend.
A new unit is the only thing you will get from them, provided you don't piss'em off. IMHO there's no proof offgassing didn't start AFTER you dismantled your unit. Dismantling a unit voids your warranty pertty much with any device. Wether your warranty is already expired or not, if you want to make them aware of manufacturing issues IMHO you should have registered your video and got in contact with the manufacturer to send the unit in for inspection, without opening it yourself.
Telling you "good luck with your endeavour" may appear rude but you didn't play by the rules as well IMHO.
Communications wasn't great from them but there were mistakes made by both of you.
That said, it's great to be able to share info on malfunctioning device and I thank you for taking the time to post here.