Better display - shortening the page lenght

Hello,

I find the post page in ED is becoming too long if I enable the comments on answers.
It adds a large box underneath every answer when a simple button would be enough...
In the screenshot provided you can see:
Comment
There are no comments made yet.
(BUTTON) Add Comment (/BUTTON)

Can you please explain, if this is possible, to get rid of the text and only display the button ?
A modification that would not be overriden with a future update if possible.
Thank you in advance...