Source? Probably HO.
This is an example of the Internet's down side - anyone can say anything without having any idea of what they are talking about.....
I've run one of the world's top custom holster shops for 30 years and Hermann Oak has overall been the industry standard for veg tanned leather, particularly since all of their major competitors have closed down. It is true that their QC is way off, and I do not get anything near the quality that I once did. However, the fault is not entirely theirs.
Because of last summer's drought out west, and then a super harsh winter, the cattle producers could not feed their stock. The result has been the single largest cattle kill in American history since late last summer/early fall. The cattle herds are now about the same size they were in 1950 - when we had less than half of the current human population to feed. This is why beef prices were so cheap 6 months ago, and are now skyrocketing.
What this means for the leather industry is that many of the current tannage hides are coming from immature animals. They never had the chance to develop their full natural thickness and density because some of these animals went to the slaughterhouse well under a year old. So, I am seeing softer, spongier material and leather with relatively poor molding characteristics when compared to times past. However, I am not seeing anything better from W&C, or the Mexican tanners who typically buy American hides.
I gotta tell you that I long for the days when I could choose from Hermann Oak, West Tan, Johnson leather, Virginia Oak, Scholtz, Cauldwell Mosier, Muir McDonald and W&C - all of whom were all turning out better leather than is available today. However, slamming HO without knowing anything about this industry is pretty damn unfair.