One thing I've always found, if you do have someone in the group who isn't as fit or whatever as the rest and ends up falling behind, if the person is clearly sorry for holding people up and insists the rest just go on and not to worry then the group is almost always more likely to cater to the needs of the slow person.  Because they understand they're being a burden and don't want to inconvenience the others more. Butter-golems however seem to lack the capacity to feel guilty or even be aware that they're an inconvenience, leading to them bitching on at people for leaving them which in turn makes it less likely the group will wait.  It's a vicious circle that is entirely the obeasts fault, just a shame that people have to bear the ensuing whalesong about oppression or whatever.