We tried this approach. It did not work. Source: SendGrid while ramping up to become a public company. The interviewing experience involved was fairly extensive

We tried this approach. It did not work. Source: SendGrid while ramping up to become a public company. The interviewing experience involved was fairly extensive; I had probably given a couple hundred interviews in my career by then and I was not the most experienced by a long shot. We tried to have a zero coding interview. All behavioral and experiences questions followed up by "how would you design a system to do blah." Got a candidate that did well. Hired. Turned out they could talk the talk but not walk the walk. It was wildly unexpected. They simply couldn't code well. Too long to deliver, too poorly written, usually didn't work right. We insisted on _some_ coding in interviews going forward