GitHub's Cassidy Williams, Senior Director of Developer Advocacy, joined the Stack Overflow podcast at MS Build to argue that agentic coding is shifting developer work toward higher-abstraction collaboration rather than eliminating the need for it. The argument pairs directly with GitHub's own 'cost of saying yes' post from the same week — both land on ownership and coordination as the surviving bottleneck. Two independent GitHub voices converging on the same thesis in one week is worth noting.