As long as Tesla is selling every Model 3 as fast as they can make them, and they're not getting any serious negative press about the phone key issue, I doubt they'll take any significant steps to fix it.
The only way I see this changing is if national media picks up the story and reports on how buggy the phone key is and how dissatisfied (some) Model 3 owners are with it, and that negative press shames Tesla into taking action.
To that end... if there's a dissatisfied Model 3 owner out there who also happens to know somebody at Teslarati or Electrek or Jalopnik or Autoblog or wherever, they could pitch that person a story about the Model 3 phone key problems and reference the
negative poll results on this site as evidence of the extent of the problem, and hopefully get them to publish an article. Then maybe such a story might get picked up by national media.
It might be a long shot, but it's better than nothing.