Nick Fuentes has repeatedly condemned political violence for years, he and his followers have also been trying to get Kirk to debate him, so killing is counter-productive from that perspective. Furthermore, the "attacks" by Laura Loomer that I've seen don't get anywhere near calling for violence.
Now that it turned out to be a groyper, you'll have to recalibrate your priors. Turns out it's the people who buy the most guns who are the most violent.
It did not "turn out to be a groyper". There is zero substantial evidence for this claim, its a complete fabrication. Elle Reeve, a journalist at CNN who has followed the far-right since the infamous Charlottesville "Unite the Right" rally in 2017, said of those claiming that the shooter was a Groyper that, "It’s like they’re grasping at vapor."