The particular video you commented on is actually about IEC 62304 and how design controls have changes as agile has be adopted. Most companies now think in terms of the V-diagram instead of the Waterfall diagram for software development. You are correct that the quality system standard is ISO 13485:2016, but I think I probably did not say it clearly enough or spoke too quickly. I also referenced ISO 9001:2015 which is a general quality system standard.