This doesn't say when exactly Bare Bones Software was founded.
The anniversary celebrated was the commercial version of BBEdit released on May 11, 1993. Not the anniversary of the company. Not the anniversary of the the non-commercial version.
Sigh. I don't really understand why you're having such trouble with this?
"BBEdit is 30 years old as a commercial product"
"30th anniversary of BBEdit as a commercial product"
"Bare Bones Software released the first commercial version of BBEdit 30 years ago"
Plenty of fine, accurate, straightforward titles to choose from, yet you keep doing weird, misleading stuff with it.
In fact, the original submitted title was fine, and clear enough.
It's apparently true that there was a free version of BBEdit released on April 12, 1992. But that is not what is being celebrated now. It's largely irrelevant. Rather, it's the non-free version released on May 11, 1993. That's why there's "30th Anniversary special pricing" of $30 with coupon code “BBEDIT30”.
30, not 31.
BBEdit, not Bare Bones Software (the exact anniversary of which is unknown).