This seems really pedantic. Are people really that sensitive that docs calling something simple feels like an insult to their competence? When the library author says “makes X simple” they mean relative to existing ways of doing X. They don’t literally mean simple in absolute terms. The statement is useful because it immediately conveys the goal of the library.
I don't think it's insulting my competence, it's just that "simple" is a sign that the original developer is not aware of the complexity (SNMP, anyone?) and hence it's now a trigger word for "prepare to be miserable for a while". And I don't like to feel miserable while dissecting something someone called "simple".