This response is such a strawman! No one's arguing that "the right to conduct sexual activities in any way without being judged" is a "sacred value" that "overrides any consequentialist concern for actually producing more effective rationalists." If every other post by Eliezer made specific, detailed reference to his dalmatian fetish, or if SIAI had a specific section of their website listing the fetishes and relationship styles of all their members, then yes, that would likely be problematic -- because it would be seriously, actually distracting from important rationality work.
But that situation is miles away from one person's private dating profile listing some relatively harmless fetishes that only surprise people because we don't usually talk about that sort of thing publicly. There's just no reason to think that this is the serious concern you're making it out to be. Frankly, I'd say that posting and arguing about it here is likely to do (or has already done) more damage than the profile on its own was capable of. Seriously, look at the comments and the downvotes you're getting, and consider that maybe this isn't a productive fight to be having. Just let it go.
The rationalist in question, of course, is our very own EY.
Quotes giving a reasonable sample of the spectrum of reactions:
Why is this important to consider?
LessWrong as a community is dedicated to trying to "raise the sanity waterline," and its most respected members in particular put a lot of resources into outreach, via CFAR, HPMoR, and maintaining this site. But a big factor in how people perceive our brand of rationality is about image. If we're serious about raising the sanity waterline, that means image management - or at least avoiding active image malpractice - is something we should enthusiastically embrace as a way to achieve our goals. [1]
This is also a valuable exercise in considering the outside view. Marginal Revolution is already a fairly WEIRD site, focused on abstract economic issues. If any major blog is likely to be sympathetic to our cultural quirks, this would be it. Yet a plurality of commenters reacted negatively.
To the extent that we didn't notice anything strange about LW's figurehead having this OKCupid profile, LW either failed at calibrating mainstream reaction, or failed at consequentialism and realizing the drag this would have on our other recruitment efforts. In our last discussion, there were only a few commenters raising concerns, and the consensus of the thread was that it was harmless and had no PR consequences worth noting.
As one commenter cogently put it,
I'd argue the same reasoning applies to the community at large, not just EY specifically.
[1] From Anna's excellent article: 5. I consciously attempt to welcome bad news, or at least not push it away. (Recent example from Eliezer: At a brainstorming session for future Singularity Summits, one issue raised was that we hadn't really been asking for money at previous ones. My brain was offering resistance, so I applied the "bad news is good news" pattern to rephrase this as, "This point doesn't change the fixed amount of money we raised in past years, so it is good news because it implies that we can fix the strategy and do better next year.")