Given that taxes are much, much higher in Germany the difference is quite drastic.
Again I am NOT using a source for 2022, it is the exact contract in force for May 2025.
In 2025, TV-L 13 starts with 4629€ a month and goes up to 6580€ (= 78K€+), depending on experience.
Indded, the raw tax difference is substantial. But the social benefits, health insurance, vacation days,... need to be considered for a complete comparison. But that was never the topic of discussion.
It is easy to create a low power chemical CO2 sensors with a service life of a few weeks/months. Obviously not pratical for real world applications. So critical data is missing in this press release.