Other people already gave their ideas.
Another one I don't think was mentioned is that before
DAS replaced GAC (Guest Assistance Card) in 2013, DL Resort issued more GAC a day than all 4 WDW parks.
One of the reasons hypothesized for this was DLR has a lot more 1-2 day visitors.
WDW guests tend to stay longer,
We are talking 2 different things.
The screenshots you showed are from the general chat accessed in the app. It does allow asking whether or not you are in the park. That makes sense because the chat CM might feel it's better to direct the guest to someone in the park to help with their question.
Different teams use the same chat function, but may get there via different links. There has always been a separate link to connect with the CMs that do the DAS chats/videos. Guests can't connect with the DAS team via the general chat.
That's the link that
@lanejudy discussed reportedly now has a question to ask if you in the park.