"And your talk of disabuse lapses back into the objectivity that some of your pomo taken earnestly would deny. If there are no facts but only interpretations, there's no reality for me to see incorrectly. It's this kind of performative contradiction that I strive to avoid by cutting back on some of the rhetorical habits of thinkers I otherwise value.'
Perhaps the person most closely associated with radical relativism, and the idea that there is "no reality for me to see incorrectly". is Jacques Derrida. But no one saddled with that accusation would argue that there is no way , in any sense, to distinguish better and worse , more or less correct. The quote from Derrida below is I think representative of how so-called radical relativists would argue against your claim.
For of course there is a "right track" [une 'bonne voie "] , a better way, and let it
be said in passing how surprised I have often been, how
amused or discouraged, depending on my humor, by the use or abuse of the
following argument: Since the deconstructionist (which is to say, isn't it, the skeptic-relativist-
nihilist!) is supposed not to believe in truth, stability, or the unity of
meaning, in intention or "meaning-to-say, " how can he demand of us that we
read him with pertinence, precision, rigor? How can he demand that his own text
be interpreted correctly? How can he accuse anyone else of having misunderstood,
simplified, deformed it, etc.? In other words, how can he discuss, and
discuss the reading of what he writes? The answer is simple enough: this definition
of the deconstructionist is false (that's right: false, not true) and feeble; it
supposes a bad (that's right: bad, not good) and feeble reading of numerous
texts, first of all mine, which therefore must finally be read or reread.
Then perhaps it will be understood that the value of truth (and all those values associated
with it) is never contested or destroyed in my writings, but only reinscribed in
more powerful, larger, more stratified contexts. And that within interpretive contexts
(that is, within relations of force that are always differential-for example,
socio-political-institutional-but even beyond these determinations) that are relatively
stable, sometimes apparently almost unshakeable, it should be possible to
invoke rules of competence, criteria of discussion and of consensus, good faith,
lucidity, rigor, criticism, and pedagogy. I should thus be able to claim and to
demonstrate, without the slightest "pragmatic contradiction," that Searle, for
example, as I have already demonstrated, was not on the "right track" toward
understanding what I wanted to say, etc. May I henceforth however be granted
this: he could have been on the wrong track or may still be on it; I am making
considerable pedagogical efforts here to correct his errors and that certainly
proves that all the positive values to which I have just referred are contextual,
essentially limited, unstable, and endangered. And therefore that the essential
and irreducible possibility of misunderstanding or of "infelicity" must be taken
into account in the description of those values said to be positive.