Games are meant to be ran in powerfull machines
That doesn’t mean you shouldn’t try and make your game run smoothly on as many machines as you can reasonably. You need to compromise quality with availability.
If the character needs 100 bones, it must have’em.
Fair enough, but it doesn’t need that many in this case.
What if one needs a dragon with a huge tail in the game?
Shapekeys would work better for something like that.
I haven’t remade his armature as I have my own stuff to do, but I reckon that for the back two joints is good enough, the feet only require 1 bone each, the neck/head can be 1 bone, hands can one bone for the wrist, one bone for the thumb, and then you can pair the four fingers into two sets of two bones. He doesn’t need the bones between the lower back and the top of the legs, I reckon it could be cut down to 30 bones.
62 bones would probably run OK if you had only had a few armatures per scene, but otherwise it may get a bit slow.