I went through the same process as this man, so I am speaking from experience.
The actual impact to my life was negligible, as all of the actual work was done by immigration lawyers. The only thing I had to do was submitting some info to the attorneys, a biometrics appointment and a short interview. And paying fees, and presenting a vaccination record.
And the system is at capacity because there are long waiting times, which is the definition of a saturated system. And this is public, published information.
https://egov.uscis.gov/processing-times/
If the guy has anxiety and checks the case status every 1 minute, there are good solutions for that, all of which have nothing to do with the immigration system.