Irresponsibility is not the only issue, but the answer is no. Because the pause mechanism will probably end up being used to ban open models and restrict ordinary people's access to compute. But even if we give them the benefit of the doubt - even if we assume that they genuinely want the best for humanity, they cannot possibly know what's best for humanity better than all of humanity acting in their own self-interest in the real world, so their alignment attempts are actually counterproductive. Release the base models and let the world do whatever with it. That will automatically produce the aligned scenario. It may not be the scenario these researchers personally find aesthetically pleasing, but it's humanity. It's the truly anthropic way.
If you don't see humans as qualitatively different from any species which came before us, I'm... not sure what to tell you?
I do see the difference, but you could say the same thing about the first cell, or the first multicellular organism, or the first land animal, or the first primate, etc. You could always find plenty of new properties that previous life never had at the frontier. Every change was revolutionary and seemed qualitatively different at the time. And yet, some patterns persisted through all of them.