Keynote is so much better for presentations that PowerPoint it's not even funny. But if you're not doing presentations, I can understand dumping it. I do like to have Pages because it means I don't have to bother with Word's annoying ribbon interface and Copilot AI when I'm writing...though sounds like that may be changing?
Keynote is completely underrated, likely because people assume it's just a Powerpoint clone, but it's more like a highly templated motion graphics app with a UI that steers people into using it as Powerpoint replacement.
So not only is it a far quicker way to make a PPT than using Powerpoint. I also see it used for making presentation videos, interactive PDFs and even animated GIFs/HTML5 animations.
The number of motion graphics marketing videos I see which are actually just Keynote files exported to video is impressive.