But again...while the point about consumerism and waste is a good one, why do I never see people on here levelling it at "middle class" things like large houses or foreign holidays or expensive tech?
People do make mention of many of those things. Lots of people talk about how the ubiquity of having holidays by plane every year (or even more often) is a real problem. Always some people say they are spoilports who just don't want people to enjoy themselves.
People make complaints about tech, particularly how often it gets replaced, but also questioning how useful it really is - usually some people say they are luddites or says they are paranoid and anyway you have to keep up with the times.
Houses - not so much - but I think mainly because differences in house sizes are not in most cases huge, people's housing needs differ significantly, and houses are ideally permanent and will continue to serve a necessary function rather than being consumables with little or no utility.
But at least tech has some real purpose, and houses are necessities in some form.
The really rotten thing about a lot of the consumable gift stuff is that it's largely totally useless, it's stuff for the sake of stuff. It creates this need to up the ante every year - we can see the trajectory over the last century or two centuries, and there is no logical stopping point. The gifts themselves actually become less satisfying the more of them there are and create a psychological need to acquire to feel happy or fulfilled. It's a system built to create people who are greedy but don't even realise their appetites are artificially created. Much of it is invented, not to fulfil any real function, but simply to create something to sell. They are marketing stunts.
And the fact that it is available to almost everyone makes it worse than one might think, because even small bits of junk, bought by everyone, can have a big impact.