From David Lat, Law2020, The Ethical Implications of Artificial Intelligence:
Just as lawyers can over-delegate work to subordinates, they can also under-delegate, causing them to serve their clients less efficiently. In the context of artificial intelligence, one can imagine underutilization of AI – for example, a lawyer not using AI even though it could help that lawyer serve the client better.
In fact, given some of the psychological attributes commonly associated with lawyers – a focus on detail, a desire for control, an aversion to risk – the greater danger might very well be underutilization of, rather than overreliance upon, artificial intelligence.
A friendly reminder: in the majority of US states, a lawyer's duty of competence includes an obligation to be up on the latest tech.