nothing about the performance characteristics of python changed with AI so why would you use python over golang if performance is a requirement/bottleneck? Trying to understand the reasoning as to me golang and python are equally simple to write and understand.
Regardless of whether golang and python are actually equally simple, python certainly has the reputation of being easier to write and read than almost any other language. That is a big part of its popularity.
If language X is a persons comfort zone, that person will often default to it. Python is certainly more widespread then go.
Also, even if it looks like that to you, there are still people that write code with their own hands.