unfortunately no other animal has been able to, shall we say shape the planet to their will like we have. initially we did not know the long term damage we were doing, ultimately to our own long term survival but even now we do, we do not have the wisdom (as a population) to do anything to stop it.
that AFAIK is unique to us. we are too intelligent i guess for our own good. We (or some of us anyway) have the ability to literally end life on the planet and that is a scary thing and not silly to be worried about that imo. what other animal will deliberately kill itsself just to inflict harm on other members of its species (unless it is as a direct attempt to protect its progeny) and whilst it may seem unlikely to happen, all it takes is someone with access to such destruction to have the mentality of someone like that and it could be game over for just about everything
is it silly to bring back direwolves or dodos or mammoths? perhaps (and T Rex isnt coming back even if it would be kind of cool)
but this knowledge may be needed to bring back bees, or some other vital pollinator or perhaps other species of animals which we "accidentally" wipe out and if so that is a good thing.
As with everything it needs to be carefully controlled...... as with any genetic manipulation there are very obvious dangerous abuses of such knowledge but that has always been the case.