Honestly, I think communities such as OS are already suffering regardless of any particular EA employee's departure, and it's just the nature of how the internet has evolved.
Tiburon's focus with respect to community engagement has obviously moved away from direct outreach on forums / Reddit / Twitter / etc. and instead become a more indirect process involving streamers, YouTubers, and other community personalities. The streamers and community personalities are basically now what the GameChangers program once was, albeit far more decentralized; the streamers promote the game, engage the audience in discussion about the game, aggregate feedback about the game from their audience, and present that feedback to the developers in an organized and actionable fashion. Compare this approach to a single EA rep trying to parse the hundreds of pages in Madden Wishlist Thread #9503; it's obvious which one is more palatable.
The decentralized approach to feedback also makes life easier for the guys working on the game from a peace of mind standpoint because they don't have to deal with the stress of community outreach. Filtering the wheat from the chaff is a full-time job in-and-of itself, and those guys already have their hands full making the game.