No magic burst at death would be one prediction to check, though not conclusive. You could test it with Horcrux 2.0, though no one has had the opportunity to do that before now. The fact that Voldemort has expressed uncertainty about whether he is capable of surviving dementors, and that he is relying upon escaping from Quirrel’s body in time to survive dementors points in the direction of him believing that a dementor might be capable of taking out him and his whole horcrux network in one shot.
None of that is conclusive, but it’s all suggestive and supports the popular version of what dementors do.
The thing about magic burst is that Dementors drain the target’s magic anyway. It’s entirely plausible that if a Dementor kills you, it sucks away your magic in the process, or at least enough of it to prevent a magic burst.
If Dementors really do destroy your soul, how would anyone know?
No magic burst at death would be one prediction to check, though not conclusive. You could test it with Horcrux 2.0, though no one has had the opportunity to do that before now. The fact that Voldemort has expressed uncertainty about whether he is capable of surviving dementors, and that he is relying upon escaping from Quirrel’s body in time to survive dementors points in the direction of him believing that a dementor might be capable of taking out him and his whole horcrux network in one shot.
None of that is conclusive, but it’s all suggestive and supports the popular version of what dementors do.
The thing about magic burst is that Dementors drain the target’s magic anyway. It’s entirely plausible that if a Dementor kills you, it sucks away your magic in the process, or at least enough of it to prevent a magic burst.