There are several distinct elements that may appear similar, and may even fit within the right arrangment, but perhaps would be best analyzed separately.
Martial mindset, Religion and Violence (Symbolic or Physical).
I can (and have) spar with a friend or colleague (Master Zhao for example) to the point where the bodies of the participants are injured, and still be a playful communion with no violence involved, nor a religion out of it.
Observations on martial arts
As a monk trained in so called martial arts (and coming from a group under/within the power of a Megacorp), a martial mindset kinda came with the package. (The concept of art differ of course, there is a linguistic path that ar" comes from “ars”, with equivalent in “tékne” or technique, so one can look either at the aesthetic of the final product or the process of doing something well that results in something pleasant, so you can have art in both the hability to crunch a windpipe with your hand and/or those shows some monasteries do for visitors and are paid handsomely for it, but i digress)
Religion (Re-Ligare to reconnect [to what was lost]) comes with both symbolic and physical expressions, and is usually related to a Martial mindset to further the values reach. (Reclaiming for example, in both the peaceful preaching and the violent subjugation and slavery).
Observations on religion
The violent part is not a requirement, but tends to help institutions achieve their goals of perpetuating themselves. (Now it is more about the mundane aspects of the symbols rather than the symbols itself, a debate that happens whenever an objective takes the form of an institution and the institution in a self preservation mode starts to ignore the objectives that created it, specially if they are about ot be achieved).
Violence is a tricky subject. The wide variety of moral codes throughout the cluster makes the topic of violence one of the most challenging and sensitive to address, but a (somewhat) common stance in interplanetary forums, would be:
The intentional use of physical force or power, threatened or actual, against oneself, another person, or against a group or community, that either results in or has a high likelihood of resulting in injury, death, psychological harm,maldevelopment or deprivation.
I must admit i was not expecting to the posibility of classification of the (apparent) Triglavian actions regarding the civilian population something outside the scope of violence. (One learns something new everyday).
However, on a military campaign, the use of violence is the de facto tool to achieve one goal. (I want something that you have/ i want to deny you from having something, you will give it to me / you will not have it, and to do this i will do several things to achieve my goal, to your mind, to your body or to your values).
The Triglavians (and the Drifters by the way) deal with extreme prejudice against percieved hostilities and combatants. (Orbital strikes [Hello Gallente x Caldari Prime], ground troops summary execution [Hello Flosewin] and such). They do not refrain from violence against threats (at least in their vision).
And now the tricky part. How much of a martial mindset is in bed with violence? If they were mindless brutes that dealt with warmonging for every issue, there would be hardly any Triglavian civilization or functioning groups available to come to New Eden. Are our verbal harassment on public forums (Hello Legislators, Press and IGS) less violent than solving issues with ones fists? Personally, i find symbolic violence as violent (sometimes more) than a physical one.
So, @Valerie_Valate, while the reference you brought up can be used to look at similarities between our people and them, there are several others, from different events from different factions, that could also be cited and make sense regarding the Triglavians.
One does not need religion to want others to bend their knees and facilitate ones goals.
PS - The Triglavian fan club is another matter entirely.