I think I see what you are getting at. Now that I think about it, consciously picking out your desires does seem a bit absurd the more I think about it. Doesn’t really make much sense. But what about the rest of what they said? The review had more to state about the pessimism of life according to the author. Like how people are only happy if they delude themselves. Or how our sense of self is an illusion, a story we tell ourselves. That we are just sensations and flesh, any formation from that is or imagination.
Well, many people find holding a religious belief fulfilling, although it could be argued religion is just self-delusion based on an imaginary power.
On the other hand, many people are happily enough having meaningful relationships with others and feel no need to be religious.
Some people are a combination of both where they don’t disbelief in a god but are agnostic.
While people should not delude themselves too much it’s good to be optimistic about life because this will give you the incentive to live a normal life.
I think it’s not a good idea to overthink things too much as this can lead to taking life too seriously.