The DEA are confrontational, destructive and foreign. They're the colonial police looking out for America's interest, not Bolivia's. This means they're going to be widely hated, even by people who might otherwise support their aims. So hated, in fact, that a political movement started against them and got elected: https://en.wikipedia.org/wiki/Movement_for_Socialism_%28Boli...

The coca reduction that's actually happening is based on replacing coca growing with other forms of agriculture in cooperation with the farmers.

Coca leaf is unlikely to be eliminated entirely as it's an effective traditional medication for dealing with altitude sickness (much of Bolivia is at high altitude, including La Paz at 13400ft). So again Bolivians are never going to support its 100% eradication.

The exported product is purified cocaine hydrochloride, not the leaf.