I remember someone telling me that the primary audience for this is western women. I was like, "No way", but sure enough a bunch of western women of varying ethnicities in the comments were laughing at the macaques killing their own children through neglect. One even had a pride flag overlay on their avatar at the time which I thought was amusing.
And I'm gonna get negrated to hell and back for this, but... I don't really see the problem if it's macaques. I mean to the extent these people take pleasure in it is disturbing, but macaques are basically raccoons on steroids in the regions they live. They're incredibly destructive and violent to locals in the area. Hell, not even puppies are safe from macaques. When tourists stopped coming in - and so too did the food stop flowing - the monkeys basically rioted.
Typically these animals are seen as vermin, like how you or I would see mice. Mice that are crazy strong and go straight for your eyes and gnads. So I can understand why locals treat them as they do. Don't necessarily agree with it, but I can understand their frustration.
Now if this shit was gibbons - as far I am aware they're pretty chill and like playing with people - or something harmless, I'd be livid. As it is now, everything I've heard of macaques are they're vile loathsome creatures. Like capuchins... those little shits.