I find various perceptions around death very interesting and they reveal a lot about cultural worldviews and value systems. Western fixations around immortality and posthumous recognition are embodied in anti-ecological burials, which are focussed on preserving the individual. These burials are also a reflection on Western societies relationship with nature, and the pervasive underlying fear of ever becoming integrated within nature, rather than being seen as above and civilized of it.
In order to popularize ecological burials, there needs to be a shift in perceptions of both death and relationships with nature. By seeing ourselves as connected with nature, rather than removed from it, we are more likely to want to continue this relationship of connection after death by giving ourselves back to the earth, rather than staying estranged from it.
If death was perceived as not an inherently tragic thing the way it is in Western culture, and instead as a natural and beautiful part of the life cycle, I believe people would be more inclined to embrace the idea of their body decomposing, or being scattered into the void, of no longer having a physical presence on the earth, because they would be more okay with not prolonging their physical existence.
This is essentially an argument for a fundamental shift in societal frameworks around death and nature. This is a big ask, but there are simple ways in which we can facilitate this, ex. Having conversations with friends and family about death, and how we see ourselves being treated after death, and how we see ourselves as fitting within the circle of life.