Earlier quoted context omitted.
In digital, pollution happens during construction way more than usage. It still makes sense to use a decade-old computer. The second-hand market is filled with material that was built at same point; you having access to your nice second hand laptop is due to newer laptops being built all the time. It is still sending a signal upstream that such a computer can be sold. I do agree that buying second hand is much better…
I agree that extra pollution comes from manufacturing and said as much in my post already. But I believe the fact that this laptop can last at least 10 years + it will consume a single order of magnitude less power over these 10 years adds up to more environment care. The production is already completed. The damage has been done. Let's use the machines at least because they are 10x more efficient and we can slow down…
If it does then the people using them don't need to buy another one, new or refurbished. If they don't need to buy, other people can't sell as easily. If they can't sell as easily, they might use it longer, and not need/want to buy another one, old or refurbished, etc...
It's a whole market and if constructors see that the overall tendency is of using longer, they will get the signal that there can be less sales overall. And thus build less.
Everything we do is part of a larger system, and I believe we should understand what the system is like and how it works if we want to have a real impact.