You say manufacturers use more power hungry components but these are laptops that run off a battery; the adapter is simply keeping the battery topped up.  A higher rate of battery drain, caused by more power-hungry components, requires a higher-wattage AC adapter to maintain a charge and/or charge the battery while the system is running. And I cannot see much difference between the Inspiron spec from five years ago and now. Inspiron comprises many models with a range of component options. And, there is  the G-series of gaming laptops. Do you know whether these adaptors reduce their power consumption when the battery is fully charged? I don't know. Certainly this sort of claim needs to be called out - [URL]#:~:text=and%20in%20the%20energy%20intensity%20of%20our%20products There is a lot of corporate greenwashing in the computer industry.
I currently have an Inspiron laptop around five years old and the AC power adaptor is rated at 45W. I am looking to purchase a Precision laptop replacement but shocked to discover the rating has shot up to 130W. I also notice the new Inspiron laptops are now sold with a 130W adaptor. What has happened? As a rule I always keep my laptop plugged in and this becomes a necessity when the battery eventually gives out after a few years. A couple of years ago I would not have baulked at this but electricity is expensive now!
Power supply rating