After reading it I'll definitely got with Capsula mundi
coz non-biodegradable wastes are all shits. these are accumulated all the way and a lot of toxins released from them and a major portion of them are the neurotoxins.
on the other hand it also deplets oxygen level inside water bodies. so, according to me i think biodegradable burials are a great way to complete this loss.
also it saves the plants from fire burials and it give birth to new plants which we all need now.
Well that's my opinion let me know yours in the comment