If they want to do that, what’s wrong with it? Maybe someone bought they game because they saw a streamer’s build and thought, “Hey, that looks fun.”
I could easily see more people leaving because they don’t like the decisions they made and would rather just quit instead of levelling another character. At least if they could look to a build to follow (once they tried on their own), they still have to play and grind to get the gear to make it work.