On the Internet, there is a "standard morality" that dominates 85-90% of ethical expectations. Or perhaps less dominates, but is the most vocal. This "standard morality" is composed of the beliefs that "all are equal, without regards to gender, race or sexual orientation" for one, while "God doesn't exist" is another. It is a very liberal set of morality, talking open societies and acceptance of everyone. That's fine in and off itself, but as was discussed on the other thread, it becomes an issue when brought into EVE RP, or at least, I think it is.
This is a universe where institutionalized, widespread racial slavery exists. We've had racial genocide by that same group as well against the Starkmanir. Yet, even with that in mind, I sense a lot of PC amongst EVE interactions. Let's take Caldari attitudes to homosexuality; apparently they remove people from their military if they find out they're gay (don't ask, don't tell). Now, some people might try to bend this, or ignore it, or 95% of the time not even know about it since it's such an obscure reference. It is inconvienient, maybe because it paints the Caldari as homophobic. But I respond with...
So? In our world, sure, fine, homosexuality is fine and perfectly normal. But as I mentioned, in the world of EVE, we've got slavery based on the colour of your skin, so why shouldn't we expect homophobia? Plenty of the cultures in the world today dislike homosexuality. That is how the Caldari roll, and that's just how it is (if we're assuming it is true that is). If they are a traditional culture versus a progressive one, with social pressures to "fit in", then the prevalance of homosexuality might be far less anyway.
Let's take the execution of Anvent Eturrer for the Gallente as well. 95% of character reaction was "omg this is bad"...but in turn I response with another "So?". From follow-up news items, it appears public execution is legal and prevalent in the Federation. OOC/OOG, yes, it was a pretty barbaric execution, and I'm anti-execution in 99% of cases anyway, but IC, Seriphyn would not see a problem. If he's spent 30 years in this culture where public execution is normal, then he'll just shrug at it.
Finally, let's take a look at "closed societies", particularly with the Caldari State and Minmatar Republic. We have many non-Minmatar roleplaying Republic loyalists, but I get the feeling that, if it was all "real", the Minmatar would not appreciate foreigners taking up their flag (for they certainly are beginning to dislike Gallenteans being their champions). If you are Minmatar, you know the plight and struggle of your people, you are bound to them through blood and are obliged to take the cause. If you are foreign, though, you might just be seen to the same degree as a Western feminist will be seen to feminists in Iran ie. "Go away, this is not you fight, this is not your business. You do not know our culture, and you do not know our struggle".
The Caldari State, similarly, is very much bound to its own culture too. I don't feel they would be accepting of foreigners, and again, I'm likely going to shot down for this, saying they are a "closed society". So what if they are? Not every country in 21st century Earth is an open society, and this "internet morality" of 'everyone should be accepted' is applied here. It's not a bad thing, again, it's just how the Caldari roll. If they're trying to protect their culture from dying out, the last thing they will do is accept foreigners coming in and practicing their own.
HOWEVER, turning this whole thing on its head, the problem with you personally eliminating these elements of PC does not mean others will. If the Caldari are homophobic, then other player-characters will use this to "attack" your RP'd faction the same way slavery is. Less of an IC attack, more of a "ha ur faction sux". Cultural relativism basically, I'm not sure Caldari RPers would appreciate the possibility of their faction being homophobic because, well, homophobia is bad etc. Same with anything else, like the Gallenteans finding public execution perfectly normal, as with the quite disturbing bodymods described in the Burning Life being common (though it's apparently a niche culture, that)
Frankly, it's not going to change anyway; the "Internet ethical standard" will remain, and always be applied to EVE...institutional racism is fine, but the possibility of any other form of institutional discrimination is not =/