@kemitchell I have implemented a slightly different fix for this. On notchless iPhones the swipe-from-top-to-dismiss gesture is still active, but I modified its parameters to make it harder to trigger. Users now need to start the swipe higher, near the top 10% of the screen (by the Discourse page header) to invoke the gesture.
The fix is available in the beta version of the app (use this link to install the beta via TestFlight).