Builder types are not viewed very favorably on the forum, though. That type of win is viewed as being extremely boring.
I suspect it is has a lot to do with the kinds of games we see posted playing that style. You do not see players posting how they played peaceful builder and won on Deity and Sid.
What you see is players posting how they are running into trouble playing a form similar to the "builder" on Regent and Monarch and some Emperor.
To play builder on Regent and win is boring, but easily done. Doing it above emperor is not so easy, but would bore me. It is a style you learn when you first start. If you are playing years later and using the same style, I would expect that to bore most anyone.