Here's what I mean by the Comments Area.
Okay, in the Forum HOME area, everything is still Cool. No scrolling needed.

Then I'll click on a category ... like General Topics.
Everything is still Cool there as well. No scrolling needed.

THEN I'll click on a Post / Topic ... like the one we are on -- Color Change to Forum.
NOW is when on MY 17" Monitor, the content will be too spread out so that now I need to use the Horizontal Scroll Bar to be able to see all the content. I don't recall that being the case with the old Forums format.
My 17" Monitor's resolution is 1024 x 768.
Who knows? Maybe this new Forum format was optimized for BIG / WIDE Screens.