We went from "academics can't build nations" to "academics can't lead nations". Then to "America became great because farmers, lawyers, and soldiers were in charge" (while ignoring failed nations that also had farmers, lawyers, and soldiers in charge). Finally landing upon Lee Kuan Yew and national character building (no idea how that's related).
There were no actual examples of an academic taking charge of a country and that country failing due to them being an academic (vs just being corrupt, despotic, insane, or plain incompetent). On the other hand, I provided lots of examples that showed academics have made modern society and the economy possible.
I'd argue that most academics don't have any interest in politics or leadership, which causes them to be relatively underrepresented in the arena. Regardless, I'm not biased against people due to their profession, as you appear to be.
There is a difference between people with judgment governing with the advice of academics, and putting academic theories directly into action. A good example during pandemic were governors who listened to doctors but applied their own judgment after listening to other stakeholders, and those who outsourced decision making to credentialed experts.