I don't necessarily mind it, but I get where you're coming from. Kingdom Come is one of my all-time favourite comics, so I might be a bit biased. I think Alex Ross' intention was to make the symbol as simplistic as possible. So the top curve of the symbol is blended into the triangle itself. It's meant to be a darker design, to reflect his feelings on the world he's in in that story.
I wouldn't want it as a permanent design, but I think it's suitable for the story in Kingdom Come.
Posting image behind spoilers for reference for others: