There;s no appreciable difference between "telling me to do X" and "pointing out I should do X".

There is some. The former adds an implicit authority claim, whereas the latter could be said in language that does not imply one.

Claim: non-consequentialists are not effective rationalists

Evidence 1: There exist strong, relatively obvious arguments for consequentialism.

Evidence 2: There are no equally strong counterarguments.]

Reason for Evidence 1: Search your mind for arguments for consequentialism. You should find one, seeing that you read lw. They sound relatively obvious, don't they? Certainly that a professional philosopher should encounter them.

Reason for Evidence 2: Search your mind for arguments against consequentialism. You don't find very many good ones, do you?