That's not comparable at all. Nobody gets hurt if you read a book or waste time with social media.
The only practical purpose of a plastic doll is to sit for a very long time in a landfill, with the only exception the short time at the beginning where it sits on a shelf instead.
These indulgences account for the most modest percentage versus other things that could be deemed "wasteful", unless we're throwing relativism out the window.
Where do you think precious metals come from for your electronics? Who do you think assembles your iPhone? It’s not always green energy powering the servers that provide you your social media high either.
Presumably people buy these objects because they derive some sense of pleasure while viewing/organizing them. I personally hate them and have never owned one but let’s not try and squeeze out some social commentary over a few toys.
A phone is useful. These plastic dolls are not. That's the difference. Nobody buys them to use them. They are only bought in some post-ironic manifestation of inherent uselessness.
The argument could be made that they are art but that's a hard argument to make. The only commentary on society here is the involuntary one.
The only practical purpose of a plastic doll is to sit for a very long time in a landfill, with the only exception the short time at the beginning where it sits on a shelf instead.