Morgan Stanley's enthusiasm for humanoid robots has cooled lately — and its analysts think technical challenges might not be the only barrier to the androids' widespread adoption. The bank had upgraded its forecast for China's humanoid robot shipments twice in 2026, expecting 50,000 units to ship this year, nearly double its previous projection of 28,000. The bank had already doubled its initial January forecast of 14,000 units. But Morgan Stanley has tempered its optimism on the sector, with analysts now asking whether robots have a PR problem. Writing in a note published on Tuesday, the bank said that the robot…