Anything with “People’s” is not something to take seriously, at best.
You may want to do a bit of research on this “People’s Pharmacy” author, before popping off.
Joe Graedon has been a highly respected, synidicated and published pharmacology expert, for years.
He provides great information and insight into pharmacy, meds and medicinal topics.
Many here likely appreciate his personal experience on this (beta blocker/generics) subject.
Here’s his bio....should you care to become more informed...
https://www.peoplespharmacy.com/about/