@avneety Anyone who has watched Mean Girls will immediately know it is made up.
The commas there are fine. The first comma separates an adjective clause, which is separated by a comma. The second comma (which separates “Atlanta” and “Georgia” or “GA”) is mandatory for city/state or city/country names.
I think this is okay, but I’m pretty sure the second comma is unnecessary. Also, “founder and creator” is redundant; use “founder.”
@WasatchWriter - thanks for that reference. I’m a little confused though because the first general example used “Our teacher, Professor Lamanna, loves grammar.” is effectively the same as the example used under restrictive appositives - “The musician Harry Connick will come to Champaign.”. And it states that a restrictive appositive does not require commas but does not state that it is incorrect to include them. That statement combined with the first example leads me to believe that commas are acceptable with restrictive appositives but not required. Am I misreading this?
@adlgel When you write “the musician,” until you name the musician, there are millions of musicians you might be referring to. When you write “Our teacher,” you are in a situation where your reader expects that there is only one possibility; that would certainly be the case if you have already established that your English class is under discussion. A better example would be “My wife, Jane.” There is only one, so that’s non-restrictive, so it requires the comma.
As to the requirement, I guess that site could have anticipated your concern more clearly. Maybe this site does better: https://owl.english.purdue.edu/owl/resource/596/1/ : “do not place commas around the appositive.”
Or just trust a 53 year old English professor.