Lightforged draenei aren’t as squeamish as Velen’s draenei. My one true love, Grand Lector Enaara, proposes that a better use of her time during the Fourth War would be to torture Horde prisoners. Another Lightforged is almost giddy about the Void elves unleashing horrific void magic on the Horde in Zandalar.
They may be wary of the void, but it was the Burning Legion they were fanatical about. That’s the enemy they fought for 25,000 years. I think it’s a fair bit of fanon that’s out among the fanbase that makes them think the Lightforged are seething with hatred for the void.