It is useful and not limited to Americans, that's why people do it. Much more people would have been vegans or they would be much more indifferent to violence if every pack of meat had a QR code to a video showing the life and processing of that particular animal.
It's also not just softening that's practiced but hardening too. We dehumanise people all the time if we want to suppress them or kill them institutionally.
We humans like to live in an idealised reality, a fiction where we are just and don't practice cruelty, our parent's don't have sex, people have roles(social roles, gender roles, political roles etc) and they always act in a way to honour that.
The reality is much more different of course, we kill animals at scale we call terrorist or another dirty word those who we have institutional violent conflicts with and exterminate them, our parents have sex just like anyone else, mothers/fathers/leaders/police/ceo's are human too and they have human desires and human faults.
Then there's cultural movements trying to bring these things closer to reality or push them into a new virtual reality. The sex revolution in the west that the eastern world never had for example creates huge divide between lifestyle and family structures between westerners and easterners(it's not that easterner are backward, it's simply another path they took). The more devout muslims practice ceremonial animal sacrifice which often happens on the streets with kids around, so they tend to have different relationship with the animal killing(no, they are cruelty or anything like that, it's just different).
IMHO, it's nothing special to Americans but Americans tend to have control over the pop culture because the USA is the dominant culture of the last century. Also, Americans are masters of marketing and they choose their words very intentionally(like the discussion over abortions are framed like "pro choice" and "pro life", which can be very confusing for non-americans).
I agree with the spirit of what you are saying but this is hardly the solution. I don't think people are against killing of animals, we have been doing this since man was born. What we are against is modern industrial animal farming.
One of the things I really dislike about opensource deployments is plugins. Often the core team is happy to let something go to a plugin and 99.99% of the time plugins just get abandoned. It's worse when some projects "outsource" basic functionality like authentication (say via saml or oidc) to a plugin.
Previously there was "Jupyter Notebook". Then they separately wrote JupyterLab (creating a brand new implementation of notebooks for it). Now, they're taken the JupyterLab notebook code and used it to replace "Jupyter Notebook".