They're not talking about using AI to replace testing and evaluation. The idea is to use AI to more quickly discover compounds that will target certain diseases.
For example, a certain type of tumor cell may have a receptor that inhibits growth. If you can find a chemical to match or shut off that receptor, it might be a good API for a drug.
You might model PK or PD results with AI, but human testing will still be required by health ministries and the FDA.
The poster I was responding to was talking about that, hence my response. Read my full comment.