Heat for removal works but is always like defusing a inextinguishable bomb and takes much more time than it should. I also have rarely seen a design where the glue was really necessary for the design. Basically they could just have put the battery in without glue and it would have worked just as fine.
Maybe companies really need that kind of regulation to so the common sense right thing.
There are excemptions in cases where it is really technically needed as far as I can tell (medical, water-tightness for safety reasons, data integrity needed so battery can't be removed). I hope they are not too lax with those.