Very interesting book. You don't really think about how often metaphors are employed in language, and their influence on how we think. The book makes some rather strong claims regarding science and philosophy being misled by metaphorical thinking, but still a good read.
And it's relevant today given how people like to anthropomorphize LLMs, and compare biology to digital machines we make. Of course there are similarities. But the point about metaphorical thinking is we are mislead by treating metaphors as literally true.
Anyway if the stronger claims in the book are at all true, it might impact how an alien species thinks differently than us (given a lot of our metaphors are biologically based). And could present significant difficulties for decoding an alien signal.
One of the best examples of a clear issue with metaphorical thinking came from discussions about the plaque installed on Pioneer 10. Some clever people thought up the idea of using a pulsar map to define where the sun/earth were. Some other clever people noted that pointing to the location with a line that ended in an arrow was very, very deeply rooted in the history of human hunting techniques and could be very hard to understand if you have never seen or even conceived of an arrow(head).