2 points
They are bad at writing software and firmware support is sketchy. That second point is technically the motherboard vendors fault but it could be due to confusing design and documentation on the AMD side. Hardware-wise they are great AFAIK.
1 point
Amd has always run really lean in terms of employees which hurts their quality imo. In 2016 (a year before ryzen 1 came out amds lowest point quality wise) intel had ~100k employees, at the same time amd had a little over 8000 and supported a wider portfolio of products, today amd is up to about 30k and it shows (although until last week intel was also up to 130k)
