I think Darrell had a very 'strict' line in his mind where he would be outgoing and approachable vs standoffish and disinterested.
I have had interactions with him on both sides of the spectrum.
1. My Uncle used to put together a tailgate that people would 'buy' their way into. Costs would go toward expenses of food / raffle prizes, and anything beyond those type of costs would be donated to the Darrell Green Youth Life foundation. I vividly remember being allowed to the player parking lot after a game where we presented Darrell with the oversized check you would see in lottery adds with our donation. Darrell was very welcoming and warm. Talked to us, had fun.
2. My mom used to work for Inova. They brought Darrell to a 'signing' event at Fair Oaks mall. My mom was able to get me an 'in' where i sat with him at the table for a few minutes while he was signing autographs for people who had come to meet him. I was younger (<10 year old) and he couldn't have been cooler (or at least i felt that way). Talked to me for a few minutes and seemed very welcoming.
Fast forward years later, i'm working the counter at an auto parts store in the area. In walks Darrell Green along with his mechanic. I simply say something along the lines of "Hello Mr Green, i'm a big fan." He wasn't douchey or anything, but he could not be any less interested. He kind of half assed acknowledged it and went about his business with absolutely zero engagement.
I think he is similar to a WWE wrestler. When the time is right, he has a persona. He has an ability to represent a brand as a professional athlete. When he's off the clock though, he doesn't put on a face. He's got a finite line between when he's being a professional football player, and when he wants to be a person.
Just my own interactions. I have zero exposure to how he treats media, or media types, or anything else.