Except that this has nothing to do with sealing in the batteries.
What, do you work for Samsung or something?
This has everything to do with sealing in batteries.
1. Removable batteries have significant armor as they may spend time out of the device. This armor would have protected the battery from localized temperature spikes.
2. Removable batteries contain internal thermal and current protection, and often fusible links. The connectors cannot be tightly spaced because they must allow for movement. Even if a battery short were somehow possible, the battery would have protected itself rather than igniting.
3. If there are problems with the battery, it can be returned and exchanged without the device. Samsung, could have, in fact, simply sent replacements when they learned of the problem.
4. If it turns out the device is defective, it can be easily shipped without the battery and the battery saved or recycled separately. This cuts down on recall costs dramatically.
I mean talk about disingenuous.