"All those concerns" is a bit too much optimistic. There are several concerns, and while there were some ideas put forward, and some patches applied to non-mainline Linux trees, all of those are untested. Values for the NTC were taken from some random datasheet on the internet in the hopes most 10kOhm NTCs have a similar R-T characteristic (they don't), and that the random datasheet I picked matches NTC that's in the battery.

Just to give you a perspective on the level of quality of existing solution.

It's better than before, though.