MT, that’s not a complete picture of the litvishe mesorah of a rebbe/talmid relationship. Rav boruch ber would consult with rav chaim on dvery decision he made. The nefesh hachaim consulted the gaon about building volozhin. Rav boruch ber would even get rav chaims haskama on every nigun he wrote..
A rebbe is forever; as the mesilas yeshorim writes, he is like someone overseeing a hedge maze. He knows where you should go, left and right. He’s supposed to guide you in avodas Hashem and how to grow. It’s a lot more than tesching hashkofa and derech halimud and then dropping you (if im understanding what you’re quoting correctly)
Some chasidim take it further, with the idea of hiskashrus.
Litvishe mostly do not subscribe to that idea, but even by chasidim, it’s not a memutzah issue; more of like ridding on the shoulders of giants.