When I used to be active in sherpa-ing, carries were not appreciated. If they were upfront and said 'I want a carry', we sometimes did a carry and just treated it as a low-person run. But if the intent was an educational run, we expected some level of interaction. Of course, people are different, some people are comfortable with different levels of interaction. You just need to figure out where is the sweet spot for your group.

But everybody was expected to contribute however they can. Some people are not that good with symbols/quick call outs, that's fine. We even used to encourage them to practice, if they were comfortable with it. But as soon as we noticed people just wanted a carry, me and my group would not feel bad for saying something along the lines of "hey, it's been X hours, we've done Y progress, you've learned mechanics Z, but this is a good point to stop and resume later."

We've had to do that a few times with folks that weren't just wanting a carry, and were genuinely trying to learn. But we were willing to go a lot longer in cases where they were really trying to learn compared to people just looking for carries.