I tried setting proxy configuration so that apt-get would work with my employer's proxy. I put my (plain-text) username and password into a dozen different configuration files before it finally worked. Then I changed my password, and couldn't remember where all I had put my credentials in. I ended up having to reinstall the whole OS because I couldn't figure out how to undo the proxy settings that took me forever to figure out in the first place. Skipping over the fact that I had to put the password in plain text.

So yes, I agree.