"This doesn't seem like a controversial of a cla..."

This doesn't seem like a controversial of a claim (be specific and not vague is one of the most timeless heuristics out there), but does seem worth highlighting.

I would like to add that my favorite claim so far ("Effective Altruism's current message discourages creativity") was not particularly well-specified. ("creativity" and "EA's current message" are not very specific imo).