How problematic is simple evil for the sake of evil in fantasy novels? Have gray areas become the default? Is it possible to still have pure, non-complex evil?

I've been seeing a lot of this in recent fantasy, mostly western fantasy, where things that used to be irredeemably evil, like demons, orcs, goblins, etc, slowly being turned into grey area characters.

From whatever the hell they did with Orcs in the most recent LoTR, to the demons in Frieren.

Evil now seems to require a mandatory sad backstory that's almost relatable, and everyone evil is in some way a victim of some greater oppression or are forced into being evil.

The most recent example that I see people still clashing about are the demons in Frieren. A predatory, man-eating species of creatures that mimic human appearance, voice and mannerisms to lure their prey and lower their guard. Pretty easy to understand. Yet some folk still somehow connect that to current real life global events, trying to make the connection between said demons and real life groups of people.

Orcs, trolls and goblins are also victims of that, since they used to be viewed as an evil force serving a greater evil and existing solely to corrupt the world. They are monsters. While being loosely sapient, they are still using what intelligence and free will they have to do evil.

The question I have is: Should modern fantasy writers be hesitant, or outright avoid, writing higher monsters (like orcs, goblins, trolls, vampires, etc) as irredeemably evil out of fear of cancellation and backlash from people who constantly make connections to fantasy worlds and real life events?