The "proper" use of the phrase is now WAY beyond that narrow view. Culturally it has gone WAY beyond that. The phrase has come to encapsulate out of touch people who think the world ended with their generation and that everyone from GenX on is some how stupid, lazy, and soft, meanwhile getting their own hurt feelings over being called on those habits. While it obvious has become identified with the Boomer generation simply because of their current status as the 65+ plus crowd, it also ignores that every single generation has gotten to the stage of life where they look down the younger generations as somehow inferior to what they were back in their day. This goes back thousands of years that we know. Socrates wrote this sort of trope. Ok Boomer is the backlash to that abuse, while willfully refusing to change themselves.
In a context like this, you have an out of touch Gammons railing on Tepera for mentioning cheating, yet ignoring the fact that this group cheated themselves to a World Series title.