Selling a new fund to potential LPs and selling your VC to "hot" start-ups.
Nobody cares if you're "good at excel models".
If your mental models (not excel models) are better than other people's you have an advantage in making money because you undersatnd the world better. Not everything is all sales. sales is really important but it's not everything.
How do you convince others that your mental model can make more money than other VCs?
How do you convince a start-up to take your money because you're a better investor than other VCs?
That's all "sales".
Venture capital is very relationship driven. Not 100% of course, but it's almost impossible to do without it, at least at the beginning.
Because they lose their thinking ability in med school and become dictionaries after STEP exams.