I can’t provide broad data but a personal experience.
I have unfortunately for several years had recurring melanoma. Several weeks back another biopsy another surgery required. Not major thankfully but normally prioritized at my local hospital and treated as an outpatient depending on level of anesthesia required.
Based on staff shortage and strained resources procedure was delayed 5 weeks. The night before I get a call that my surgeon (fully vaccinated) has a breakthrough case. Procedure pending but at a minimum 2 months longer then normal. I can’t quantify medical impact of any but certainly sleepless nights and concern.
I suspect this is representative of what our entire healthcare system is experiencing and I fear for those with more life threatening or urgent needs.
As I have posted before I am not for vax mandates because I don’t think they will work. I am for people acting responsibly and recognizing that for the vast majority of Americans getting vaccinated is in their best health interests and simply the right thing to do for society.