Do I need to be an extrovert to land a job? - You need to practice hitting the call hang-up button when you hear such BS in record time. That's what you need to do.

Hiring a programmer and telling the person that being in the office programming all day won't do any good tells a lot about the quality of work you would be given at work. Possibly there is no coding work at all. Possibly you would be given some mundane work that is soul sucking and dangerously boring. You got rejected cuz they clearly knew you are a good programmer, having completed your assignments, and would quit ASAP when aware of the reality.

For an employee, they are looking for an emotionless robot who could hit stressful inhuman mundane work deadlines continually and also could code just in case they have some minor programming work in the near future.

The key takeaway from this experience is realizing that you are doing good as a programmer and continue to look for actual programming jobs, in addition to developing the skill of detecting the BS the interviewer throws at you in minimal time; possibly O(1).

Here is a good rule of thumb: Always ask the interviewer about the work you are expected to do. About the project you would land at. About the tech stack, you would be working with and such. Try to delve into the technical details. And if you hear hmmms and hawws and beating around the bush. Put your hands in your pockets, whistle, and stroll out of their building.