Unfortunately, the reason this happens is because likely 90% (if not more) of the "mentors" you see are just people who are trying to get an achievement who have no interest in adhering to the idea or spirit of the "mentor" status. It works like this:

- You get a special mentor roulette
- If you do it 2000 times you get a pegasus mount

That's it. Almost every Mentor doesn't see sprouts playing content for the first time as an opportunity to teach and enrich others, growing the community and harboring good will by extension. Instead, they see sprouts as an obstacle they have to overcome to get their achievement mount. Your experiences will speak for themselves after you've made this realization. After they get the mount they almost always turn off their crown. At least this is what appears to be true after playing the game for so long and seeing it firsthand myself so many times. I know a single person who I could call a legitimate "mentor." The rest are just shoe-horning sprouts through content so they can get a mount. Back when I was new to the game the people who showed me the ropes and were the most helpful weren't even mentors. They were just people in my FC. Ironic.