One can do whatever the license allows. It is not my fault if I monetize someone else's code that is MIT licensed. People should read and understand licenses before slapping one on their open source project.
I've been using the MIT license for a decade. It's actually free software, not "free but if you fail to follow my manifesto I'll sue you". It's more practical since it can be used for anything, and it's better for the community since people can use it and contribute without risking legal liability.