I agree with you but for most things it honestly doesn't matter. The time you wasted researching is worth more than whatever difference there might be. I also think we don't need any of this junk in the first place.
Economics is based on trade-offs, and a trade-off of "opening windows" can be "lowering indoor temperature". Incidentally: some parts of the world are in an energy crisis.
Edit: also, that «whatever difference» clashes pretty heavily with
> It is hilariously easy to inadvertently design a device that measures temperature with an error of 5degC, humidity error of 50% and pressure error of equivalent to 1km in altitude
It is also difficult to avoid noting that we "look into things" for many reasons and also indirect gains; that there exist "silent killers" and, more importantly to some, silent harmers; that some "principle of inquiry" (of "knowing the world", of testing, like Galileo's "Saggiatore") and a "principle of wanting to get things done properly" are there...
Indoor air quality? Open a window. airnow.gov