Your links do not describe any problem that is inherent in the principle of such batteries.

They only warn against the danger of not taking care during fabrication to eliminate the moisture from the electrode.

If such low quality electrodes are made, they are prone to decomposition at lower temperatures than the well made electrodes, which have been dried sufficiently.

Similar risks of bad fabrication exist for any kind of batteries, like there were a few notorious cases of lithium-ion battery models that were prone to catch fire.

Moreover, in most applications of such batteries one must use short-circuit protections, so it should be impossible to overheat a battery by shorting its outputs. If that happens, not the battery is guilty, but whoever has designed a device without protections.

The point is that absolutely any kind of battery presents risks. Without short-circuit protections, any battery could cause a fire when shorted.

There is no reason to believe that sodium-ion batteries are less safe than lithium-ion batteries. On the contrary, it is very likely that sodium-ion batteries are safer, e.g. for not having a flammable electrolyte.

I'm sorry, do you actually know about batteries, or do you just casually read about them and now feel obligated to defend a point you tried to make?

The shorting which causes failure is internal, from manufacturing defects. Yes, it's rare. No, it's not something the end user can detect or short protection can stop. This is pretty basic knowledge...hence my questioning (and you totally wooshing on the foil shorting demonstration I pointed out...batteries internally use foil, the foil is what gets hot).

So you have to decide if you want your possible but very rare event to be a small fire or a hydrogen cyanide gas leak.

Also SIBs are a new tech, so who knows what the failure rate will actually look like. Or if CN will even be a concern, the chemistry for mainstream cells might be different.