First of all it does not support only MilkShape it support also Milkshape

Old low poly game ?
Even modern commercial game can use 5000 or 6000 tris
You can imagine an amateur
Not problem at all with MilkShape

Apart from that you did not get my point

I was talking about reliability

Thre are a lot of Fbx | Collada convertes

The point is , do they work ?

I must cross my finger any anytime I use them