Yes, I can't speak to which launchers all support it, but I know Microsoft's does, and it is a feature in Samsung's One UI. In Samsung's you can choose the service. I only have Google listed by default.

I Samsung's One UI (I'm on One UI 8), after enabling, swiping to left to right to reach the leftmost page displays the news feed, Google, in this case:

Even if it's mainly a Samsung thing, I assume still value due to the number of Samsung devices out in the wild.
For my part I don't use the feature because Google default, but would definitely make use of a Kagi News version. Easy and habitual way to use Kagi News!