Language and Mind is surely not a bad book. However, it has the huge problem that it is based on three lectures from 1967, so the content is now 50 years old. Naturally, the state of linguistics and psychology is rather outdated. Also, after the structural paradigm, there was something like the post-structural paradigm.
Nevertheless, as far as I can judge, the content is well described and reflects the research status of that time. In the part on the present, Chomsky's surface and deep structure in its then form is well utilized and explained. Interesting rules in the syntactic and phonological areas are also elucidated, which I really found well presented and exciting. But Chomsky also gives hints about other research results from that time, and I have mostly never heard of the quoted people. So I have no idea whether their theories have prevailed in the long term.
In the part on the past, Chomsky provides very interesting historical insights with three focuses: the Cartesians based on Descartes and their attitude towards the human mind, the "philosophical" or "universal" grammar starting in the 17th century, and of course the structuralists starting with Saussure.
The final part on the future deals less with concrete predictions than with problems that linguistics (and behavioral research in general) will have to deal with in the future according to Chomsky. From today's perspective, this is of course an impossible undertaking to describe adequately, even though Chomsky has predicted many problems quite well. Nevertheless, the change here has been too great, with new developments in the technical field and neurolinguistics, so that this part today is nothing more than a historically interesting inventory from the 1960s.