I agree with the other commenter, it baffles me that we think that asking someone to write code, when the majority of their job will be writing code, is somehow an unfair interview process so the solution is to have them give only hours of powerpoint presentations.
I've come across many a smart person who would abhor the idea of listening to a presentation, let alone give one. Give me a document they'll say, and they will go through it at depth and collaborate amazingly over text. A mix of both is required. You don't want everyone to be giving presentations all day, just as you don't want no one to be attending any presentations. Diversity is essential, and it's more effective to create structures that allow different types of people to work with one another than to mould people into personalities.
It's akin to saying that because some people have anxiety issues, we should completely do away with interviews and just let people randomly walk in and do work.
Because that's the only way to potentially avoid the criticism you gave here, only that's also not true because locale comes into play. "You didn't create a building every 500 feet that people can walk into, so now you're disenfranchising people without cars!".
My point here is that this is not a useful criticism. Come up with a useful grievance, one that's actually actionable, and then maybe we can talk.
You act as if the people listening aren't aware of this.
What is it you believe exactly, that if person A sounded nervous they wouldn't be hired?
The entire point is to get a conversation started, and the following Q&A allows them to do something everyone needs to do in a job, which is to answer questions.
No interview process is perfect. You can literally give me a description of any interview process and I can start finding problems with it.
Just as you can literally give me a description of any software solution and I can start finding problems with it.
That you can find problems with it doesn't make it useless or harmful. Please come up with better criticisms.
I can do presentations, however you are asking me to hold a free 30 minute lecture teaching your employees about something. I'd rather not, basically every company gets excited to hire me anyway and I'd rather spend a few hours doing some comfortable coding over spending a few hours preparing a presentation.
