You're literally making the argument for why the problematic scenario the person you are responding to will occur. It costs nothing to waste the candidates time with this tool, so people will "turn down the dial" and do that.

They'll keep running screenings after they've got someone they're almost sure they are going to hire, because if the deal falls through its better to have candidates in the pipeline.

They'll run screenings before they bother to evaluate if they're even interested in a candidates skill set, because you've made it cheaper to filter out candidates for lack of technical skills than lack of job fit. (And no forcing them to meet the candidate once before running this tool will not change the fact that they will do this)

And so on and so forth. Which is ironically why using this tool would filter the best candidates from the hiring pipeline while simultaneously making life worse for everyone who isn't one of the best candidates and who does have to put up with many companies wasting their time to get a single job offer.