My sense is that the Nepal tourism ministry operates on a strictly revenue-maximizing model, and doesn't care about waste or corpse removal. They give it lip service but haven't done much. The Sherpas are organizing, and demanding and getting wage increases. The wild card is China's increasing allowance of permits from the Tibet side on similar terms to what Nepal has done. Good info here: What's Being Done About Trash (and Bodies) on Everest | Outside Online

The whole Everest tourism thing strikes me as something far removed from the things I like about mountaineering (although I'm really not a mountaineer). No decision making, no self reliance, no discovery. In 2018 it was only climbed by the two "trade routes." But it's pretty typical that the biggest mountain gets tons of people and the smaller ones are left for those who want a more solitary mountain experience.

My uncle Dave was part of one of the early American expeditions from the Tibet side, a March 1983 attempt on the West Ridge. They were driven off by weather and sickness. An Attempt on Everest's West Ridge from Tibet - AAC Publications - Search The American Alpine Journal and Accidents