I love him now but don't blame you for not caring if he comes back lmao. however, where did you hear "Acta est fabula"? and why do I feel like it is literally the perfect phrase for how this character died lmao.
seriously if he didn't die a lot of things wouldn't have had as big an impact nor felt as serious. we might not have thought the danger in Northcrest was bad if someone didn't die, and since it was someone that we know personally and our companions had been with almost their entire lives, it reveals how incredibly dire everything is. plus, now the companions we are with atm have another reason to fight, to honor his memory and be rid the world of those who stole him from them.
I hate character deaths but sometimes a story isn't good without them. if you just resurrect the dead every time someone dies or never have any good guys die it's not always going to be a good story because there is no suspense or concern about how things could go wrong. which it's also the same with the opposite, character death constantly just makes everyone far less invested in characters since we know they prolly die in 5 minutes anyway causing everyone to eventually abandon the series knowing nothing good will happen anyway. in this maybe his death was one of the only ways to convey the tone this chapter of the story needs, as much as it pains me to say that.