Not much different to a doctor reading through clinical trials and then recommending the best treatment based on the use case. They didn’t design, develop or manufacture the treatment. They were not involved in the trials. The majority are just expected to know enough to make an educated decision based on specific, individual circumstances.
I want my doctors to use tried and tested treatments. Not reinvent the wheel. A good doctor is one who has a high success rate.
Yet the industry acts as though you’re not a good dev if you can’t reinvented the wheel from scratch… coz… Ignorance? Ego? Delusions of grandeur?