Fanatical purifier-no diplo even with same species? Why?

[Areus]

I was playing as a custom built Human empire with Fanatical purifier setting- fanatic xenophobe and militarist. Well, after playing for a while, I encountered with Commonwealth of men, another human Xenophobe empire. I thought I would be able to do diplomacy with them, since we share same government group, same species, and similar idea. However, I got -1000 opinion saying fanatocal purifier does not negotiate with xenos,when they are NOT xenos. Is it intended or a bug?
I remember seeing stuff that -1000 opinion is not given if two empires are of the same species.

 

[Halblind]

Hi,

I think I've read that fanatic purifiers can't have diplomatic relations with anybody at the exception of an other fanatic purifier empire of the same specie. I guess even another xenophobic empire won't work if it is not a fanatic purifier. I also think that's a little bit weird. They could have a malus of relation for being "too extremist" but still be able to have diplomatic relations.

 

[Aramel]

Did you have the same traits as default humans (quick learner, nomadic)? I think the game takes that into account.

 

[ramius3443]

Here are the relevant quotes:

Fanatic Purifiers: Your empire will not tolerate the existance of any other sentient life. This Civic requires you to be Fanatic Xenophobe/Militarist and gives very large boosts to the effectiveness of your military and gives you Unity from purging Xeno Pops, but disables all diplomacy with other species and forces all Xeno Pops in your empire to be purged (though you get to choose the method of extermination). All other regular empires will also have a massive relations malus with you, the one and only exception being Fanatic Purifiers from the same species.

Two Fanatic Purifiers from the same species will actually have a huge relations boost with each other, though that will only ever really happen if the player makes it happen.

So long as they have the same portrait and name, they would see each other as the same species.

As per the last quote, they do not need the same traits. Just the same name, portrait, and burning desire to ruthlessly purge all the xenos from the Galaxy.