Many customers do, and in fact Orion feedback forum [1] is more active than Kagi feedback forum [2] (we do not have any telemetry and all product input is given directly by our users).
While Kagi has "only" about 50k customers, Orion was downloaded more than a million times last year and continues to be a major distribution channel and entry point for the Kagi eco-sytem. (you are not seeing any ads for Kagi right? Our products are our "ads", that is how we grow + wonderful user community)
And while you can use Kagi in any browser, it is a really nice experience when you use Orion (and it will get only better as we build more integrations). We are also aware about cross-platform users - which is why we are also developing Orion for Linux as the next platform, with more to come.
Not sure what point you wanted to make by linking to the comment - happy to address it after clarification.