It's kinda creepy though. My DD had 4 couples stay last weekend. None had ever been to WDW. She's a master WDW planner and said it would look exactly like she was a 3rd party tour guide, because she was-just not paid.
That said, she thinks like others have said- they likely watched constantly changing "friends" on the app which she wouldn't have if they approached her.
Also mentioned very obvious social media advertising esp TT, but who knows.
She did feel a bit bad for them, explaining they generally are some of the biggest fans of WDW, and besides the money enjoyed making trips better for folks often related to helping with kids.
They can apply again in a year though.