While I definitely find anyone relying on a "DBM-esque" addon to be incredibly lame and tryhard, there are definitely plenty of fights that do things more or less in a pattern, at the same time. And there's usually some predictable overlap over fights.

For example, the last boss in EW dungeons lately have been pretty liberal with their party wide AoE within the first few seconds of the pull. First and mid bosses sometimes, too.