If you navigate around the rest of the app, you'll see that when you tap items or interact with the app, the User Interface responds to your taps/swipes instantly.
In terms of User Experience design this is encouraged as it lets the user know that the app has recognised their interaction and is now loading the results.
So in this case for instance, when you tap "quote" in the thread view you currently don't see any change in the UI, so you can't be sure the app has read your input. If I add a slight fade animation you would know that the input has been read instantly, and that now the app is working on your request.
It's all about providing a polished experience that gives the perception of instant speed with the app responding to users