In the past I dismissed ideas from my clients about the possibilities of moving their websites from Weebly to WordPress.
My dismissal of such inquiries had nothing to do with the effectiveness of WordPress which is quite obvious.
My primary reason for such dismissals were centered around the understanding that compared to Weebly, WordPress was much harder to use especially by clients who were/are very particular about being able to manage, edit and update the websites on their own.
I was against those intentions because it went contrary to what they (client) kept requesting for which was to help then build a website that they can easily manage and update on their own.