Yes - agree. If you build a bridge (in many places) you have to sign off on the design - warranting that it is your professional opinion that it will do the job. To do this you normally need to be a chartered or certified engineer and you need professional insurance.

If the bridge collapses you get sued and your insurance pays out. You probably don't get more insurance.

This is not a perfect system, but we need several elements of it for algorithms. We need the ideas of tolerances, confidence intervals and analysis - certification of fitness for purpose must be limited and constrained to have value. We need professional certification that enables employers and the public to recognize experience and capability. People have confidence in pilots because of their uniforms, qualifications and the checks that they undertake (training, retraining, blood testing, medicals) on a regular basis. As we have seen with the 737 max, when these things breakdown there's trouble.