It’s new evidence that cows are capable of what we (humans broadly) previously thought them incapable of. It’s important because it’s a concrete indicator that there’s more going on in cow brains than humans have generally assumed.

As I said, perhaps this is surprising only because we understand brains overly mechanically. As if it's assumed that there's a hard "can/can't do" switch for particular mental actions, while in reality any ability may be a result of various factors within the individual brain and outside of it aligning together (including, of course, the cow in question being a pet, so having a very comfortable lifestyle). If people can vary wildly in their mental abilities and inclinations, why wouldn't animals?

That's a fair point. On the other hand, Veronika is described as a pet, which might mean she's not even being milked, and her lifestyle is perhaps more conductive to letting her experiment and learn about her environment than usual.

Still, we haven't been treated cows that horribly until relatively recently (not to say that older practices were particularly humane either), and there's probably a solid number of cows living outside of that system, so I'd still expect something like tool usage being noticed sooner than 2026. Which is of course a subjective impression, there may be other, better explanations...