One should distinguish the assessment of a proposition from the conventional historical-methodological qualification.

For example:

A proposition: Lack of citation can sometimes result from intellectual bias or a dominant scholarly tradition.

My assessment: I agree. This is a legitimate possibility.

Then there is a separate qualification:

But lack of citation, by itself, does not prove that bias caused the neglect.

That is not disagreement with the first proposition. It is a limitation on what can be inferred from the absence of citation.

So the clearer formulation is:

I agree with the possibility you are proposing; I am only cautioning against treating that possibility as demonstrated without evidence.