You have still provided nothing to support your assertion that Peace Corps “needs to be reformed.” You have made a lot of statements, but no arguments.
Please provide some concrete examples of or evidence support how you think the organization is failing to meet its goals. From my perspective, it seems like you don’t know much about the program the fact that it’s called Peace Corps, you heard of some people joining it out of college (nobody joins it out of high school, despite your recollections), and it rubs you wrong for some reason.
There is a simple factual answer to this.
Peace Corps works with countries and communities, and both are expected to make an active contribution to the Peace Corps program. For example, communities are usually expected to house their volunteers, place them with a counterpart or existing organization, and sometimes find a host family. If a Peace Corps volunteer designs a project, the community is expected to contribute a substantially. For example a volunteer may raise funds for the bricks to build a new schoolhouse, and the community will provide the land and labor. Peace Corps volunteers are there to teach, motivate and facilitate a community, but ultimately the development stems from and belongs to the community.
This means that Peace Corps only works in countries that have specifically invited Peace Corps to work with their country. Every Peace Corps country wants its Peace Corps volunteers, and has taken concrete steps to show that. Peace Corps is not something that is imposed on people. It’s not something that people resent. Countries desire their volunteers and work hard to keep them active.
There are a number of reasons why a country may not apply to be a part of the Peace Corps program. There are countries who do not ask, and there are countries that have suspended or terminated their program. There are also times when Peace Corps decides a country is too unsafe or unstable for a program- Peace Corps does not operate in conflict zones, civil wars, or other inherently unsafe situations
In Brazils case, specifically, they have a legacy of viewing development through “dependency theory,” a development philosophy that was championed by several prominent Brazilian theorists and political thinkers. Dependency theory basically says that rich countries get rick off the backs of the poor, and the best thing that poor countries can do is tell rich countries to stuff it. In practice, dependency-theory based political policy has not been a and has been largely dismantled. But dependency theory is still a part of the political culture there, and so shunning things like Peace Corps is one of the few ways that politicians have to play to this lingering sentiment.