From the sidebar text on page 107 of the rule book:

"Animal moves just say
what the animal naturally
does, like “call the pack,”
“trample them,” or
“escape to the air.” When
you spend your hold your
natural instinct kicks in
and that move happens.
If you spend hold to
escape to the air, that’s
it—you’re away and on
the wing"

I often read that the way this should be interpreted as animal moves just 'succeed' if they have a hold to spend on the move.
If you transform into an elephant and say 'I want to trample the group of orcs', you spend 1 hold and you just kill them all.
Now, for obvious reasons, this isn't fun for the rest of the party. Nobody wants to struggle to kill one enemy and then have someone else wipe them off the map in one swoop, without so much as a combat roll.

I guess my question are:
Am I understanding the rules incorrectly? Could a dinosaur sized shapeshifted druid just stomp an entire hobgoblin war band?

Why does shapeshifting hold basically no penalty? A druid with +3 wis has a 92% chance of rolling 7+ which means they have a 92% chance of not having even the slightest consequence.
In contrast, a wizard or cleric could face consequence on ~40% of their spell casts (with a +3 modifier).

Why does shapeshifted druid moves just 'work'. Why is there no roll required?
Surely enemies would scatter from the path of a charging elephant; why do they stand there and meet the giant grey feet with open arms?
I understand why a mountain goat doesn't have to roll to scale a rock face, but I imagine if there were giants throwing boulders down there is now a risk that is beyond what a mountain goat 'could normally do' without effort.
The same goes for a bird's flight, I understand that flying across a field is a trivial task for a hawk, but what if there was a constant hail of arrows in the air. Now shouldn't the druid have to defy some danger?