It will require that you set your privacy level to at least "Private with Public Family Tree". But that is a good thing because it allows others to see your ancestors, who could be their ancestors too, and recognize you as a relative.
Currently, the connection finder does not allow a connection to be established to you based on your current Privacy setting unless you add that person to your Trusted List.
So, by changing your Privacy setting as stated above, you are allowing better collaboration with you which is what WikiTree is all about.