It's just certain worlds in my experience and in some cases it's just being judged by a single moment that happened when the rest of the time it's great and helping people all the time.
This is an issue sometimes. They want to quote The Balance's level 90 rotation advice to a sprout that wants help with their Sastasha rotation, or they expect the sprout to understand acronyms that we are used to.
This is especially annoying. It's not really a mentor issue as much as it is a people issue. A lot of people are just inconsiderate in my experience.
I find it to be more common from crafter/gatherer mentors because they lookup information on the internet or The Balance in order to get their answers to make up for their lack of experience, which Battle mentors are more likely to have because they have achievements that usually come from battling at different levels.