SADA Senior Project Manager interview questions

Recruiter reached out on LinkedIn and scheduled a HR screening call. Moved forward with 2 other interviews with hiring managers over the next 4 weeks. Sent several follow up emails but never heard anything back. Ghosted. Not even a Dear John template rejection. I'd say this is unprofessional but it seems most companies with poor HR depts and inadequate hiring processes are doing it this way these days.