Laptops like DV6000 weren't really disposable. Say, you bought base model in 2006, used until 2012. Upgraded, CPU, RAM, storage and rand Windows 8.1 (this OS still had all drivers for it) until support ended. It will end in 2023. If it is used for light work, it is adequate for that. That's 17 years of very cheap computing. Assuming that you are okay with using it as your main machine and your computing needs aren't very high, that's a hella lot of value. Right now, 2012 Pentium P6200 laptop, could be upgraded to i7, 16GB RAM and 1TB SSD. That's not weak and will last for quite a while. I would expect no less than 12 years out of such machine, if it doesn't break down. Such laptop was around 400 Euros new. Later you upgrade it for 300-400 Euros. That's 800 Euros for 12 years of really nice computing. Cost per year of such machine is 66.(6) Euros. Power consumption is quite low of laptops, so likely no more than incandescent bulb, which is 62 watts. Owning such laptop for all those years is actually cheaper than owning desktop, due to similar component price, but much lower power consumption. That's cheap and not shabby.
Meanwhile Deck is already quite limited and as gaming machine it won't usable for more than 3 years. As general purpose PC it doesn't really work, but if somehow someone perseveres, it can last. But since nothing apart storage is upgradable, it will be in dumpster (sorry, recycling center, don't put electronics in dumpster) a lot sooner than what was once a cheap laptop. Dumping device and searching for new one is quite more expensive, as Deck in non e-waste spec is quite expensive. Anyway, I didn't write my previous comment to write about Deck again, I was just trying to say that laptops can be highly upgradable and still cheap if they are designed that way. That was good for consumer and likely helped to reduce e-waste. Modern laptops are made a lot worse, nearly everything is soldered, thermals are atrocious, they are loud, they are also brittle and despite efficiency advancements, battery life didn't meaningfully change, because they became smaller. Modern laptops are the best example of shoddy engineering, no foresight and very obvious planned obsolescence in order to save some bucks and generate more cash from higher replacement rate, which is artificially inflated. In modern electronics, there simply aren't more infuriating devices than laptops. Thankfully, I don't have a reason to own laptop and I really don't want to have one.