This is probably some kid raising steer on his daddy's land and playing rancher and posting for clout. Hormone and antibiotic-free is hard to do and very expensive. Add in cost of feed, processing, etc. and there's not much profit margin at 100 head/year.
So if he is slaughtering 100 steers a year, he would probably have over 200 head of momma cows. That’s a nice size cattle operation.
Read the article and look into the ranch. They bred and sell top bulls as well as grass fed beef. The article refers to the authors as one of their ranches. Don’t think he is a hobbyist or some kid raising steers.