add more detail about alternative

proposals/3994-display-notification-reason.md

@@ -21,8 +21,8 @@ Extend the `Notification` object returned by [`GET /notifications`](https://spec
 
 ## Alternatives
 
-Let clients determine the executed push rule. Clients likely already do this in many cases. For example, Element Web
-runs client-side push rule processing for encrypted events, and on `/sync` response)
+Let clients determine the executed push rule. This would mean rerunning push processing client-side on notifications fetched from `/notifications`.
+Clients likely already do client-side push processing in many cases. For example, Element Web runs client-side push rule processing for encrypted events, and on `/sync` response.
 
 ## Security considerations