Not alleged, Jensen Huang confirmed itI just think most of Nvidia's wafer allocation is for GB100 dies and they want to fulfill those orders first. Remember there was an alleged Blackwell slip/issue about 6 months ago. It's possible that had an impact on wafer allocation.
Nvidia CEO Confirms Design Flaw in Blackwell AI Chips Fixed, Production Resumes
Blackwell chips, introduced in March, were delayed from the second quarter
finance.yahoo.com