Ecocide is any harm caused to the Ecosystem and therfore a harm to all. The term is not yet in common currency because the historic development of law was not ecosystem aware. By focusing on harm to person, property or state it has traditionally struggled to categorise nature.
This means that we will be in a very long transition period before legislation catches up to recognise this type of harm.
We have now entered some (arguably widespread) awareness that the threats to our ecosystems are threats to human survival. This primary existential threat has driven several iterations in the development of protections for nature.
This type of approach of conceptualising nature as a 'thing' (like wildlife in 'wildlife protection' schemes) is holding us back from the realisation that nature is everything. This may partly stem from religious and cultural beliefs that humans are not actually animals.
Work on shifting international law away from nature as things to nature as systems has gained traction through the discourse around the term sustainability. This has resulted in the Sustainable Development Goals (SDGs).
Human 'limitations' to comprehend existential threats may ironically be partly a result of the evolutionary pressure to select individuals who act quickly before thinking long term. This theme of 'cognitive style' can be addressed within Future Studies.