Logically this is correct because by the time a header is received by the user agent, all the work to create that request and send it down the wire is done, but

Logically this is correct because by the time a header is received by the user agent, all the work to create that request and send it down the wire is done, but now we’ve asked for an additional workload, however small, to be performed in this computation thus causing more energy to be consumed per request. If we did not have this header, the computation will not be necessary. Also this is purely just fluff for an http request because anyone can put anything in here regardless of the actual CO2 cost. It’s probably the most useless thing I’ve seen in the last hour, if not all day.