I'm noticing similar behavior, so will tag into this thread.
I use Orion RC for daily browsing, plus have a Kagi Assistant web app saved from Orion RC.
After listening to @Vlad's interview with John Gruber, I decided to try launching searches directly from my keyboard launcher (Raycast). I used the config steps given for Alfred as a guide, with Orion RC as the browser to launch.
But now when I try to launch a search via Raycast, the query is always sent to the web app instead of Orion, even if Orion is open and the web app is not.