Without an empirical methodology it's hard to know how true this is. There are known and well-documented human biases (e.g., placebo effect) that could easily be involved here. And besides that, there's a convincing (but often overlooked on HN) argument to be made that modern LLMs are optimized in the same manner as other attention economy technologies. That is to say, they're addictive in the same general way that the YouTube/TikTok/Facebook/etc. feed algorithms are. They may be useful, but they also manipulate your attention, and it's difficult to disentangle those when the person evaluating the claims is the same person (potentially) being manipulated.

I'd love to see an empirical study that actually dives into this and attempts to show one way or another how true it is. Otherwise it's just all anecdotes.