The author of this has been on a crusade against Apple for years, stemming from an incident that was probably hypochondria. They've outright lied about multiple incidents (see https://twitter.com/shantinix/status/1433297575914971136 ), and I would very strongly doubt any new claims made. For example, a spot check of one of the claims has them currently saying "Still, Gjovik’s limited testing returned results showing…
It's really hard to "catch" these things in the moment. I work in chemical plants and there are tons of huge releases of extremely toxic gases all the time, which I can often smell from my apartment. I know what they are by smell because I manufacture them myself. Proper continuous monitoring for a broad range of chemicals would cost about $1 million per monitoring station and we'd need to build them along the perime…
This seems a bit high, closer to $100k installation cost for fairly basic real time regulatory monitors seems about right. CEMS (automated stack testing) monitors should be somewhat cheaper if the engineers didn't screw up the housing location on the stack/vent.
Otherwise, your prose very much matches my experience with air quality monitoring in Australia. It's an absolute mess and very much amateur hour compared to water monitoring or meteorology.