you don’t. you can try to mitigate it by using less plastic yourself, buying local foods, whatever, but it won’t make much of an impact.
the less bad news is that plastic, by its own properties, is chemically relatively inert, so they’re really not that harmful. they’re still bad, mind you, just not all that hyped up to be.
“linux is hard” is a subjective opinion and he is entitled to it. it does not make it misinformation. he is free to express his frustrations at the learning curve, just like any learning curve in any other software.