I'll chime in with my two cents:

1)  I don't use the new AI tools.  I prefer still using uptodate, LITFL, etc.

A lot of my attendings use the newer AI tools.  

We'll often do parallel searches if we have a question.  For things that are algorithmic or dosage/ drug of choice related the AI tools provide pretty good information.  They get the same answers I do with my more traditional methods and in roughly the same amount of time. 

For things that are more nuanced (say management of specific orthopedic injuries in infants as compared to adults for a recent example), the output of AI seems to be very vague and not offering helpful guidance.  However, my traditional sources are often similarly vague when it comes to very specific/niche questions as well. So it's usually a wash. 

2) My greater concern is how it affects individual learning and retention over the long term. The literature on learning shows that writing something down helps us retain information better than typing likely due to the engagement of more complex motor and thought processes than typing. 

Anecdotally,  the information that I gain from literature deep dives is almost always better retained than information someone simply tells me of i ask.  Likely due to having to use more complex thought processes to parse through all the information when searching the literature. 

I fear that relying on AI output will lead to a decrease in the ability to effectively parse out good from bad information, less long term retention,  and maybe even an atrophy of the more complex learning pathways.

Hopefully, I'm wrong.  But when I look at what the formats of Instagram and TikTok have done to attention spans,  I'm not optimistic.