>it's against someone nearly 60 years of age and older.

Again, you're getting this definition incorrect. Someone who is 80 years old right now is not a boomer.

>If the primary reason you are calling them a "boomer" is because of their age group, then (in the way it was used) it is, in fact, age discrimination.

Sure, it's age discrimination. It's generational discrimination. It's not a blanket discrimination against the elderly though. I said it's different, not better.