I would feel the same way if I came to realize that my helpful nature was being abused by a bad acting corporation, and I would refuse to give any more help until I felt it was more equitable.
I’m not sure why Duolingo didn’t already have control over their subreddit. This is a bad look for them, and I just signed up for a family plan. Will I get support?
Generally Reddit doesn't like companies owning the subreddit as it's supposed to be more of a community platform.
After the Pixel launch, Google had this poor guy acting like a customer experience manager for the sub, escalating requests to Pixel team staff, acting as a direct liaison between Support and Engineering, and talking to angry Redditors all day, totally unpaid.
When I point blank asked him whether and how this multi-trillion dollar company was compensating him for his very real labor, he had a "but they're my friends" moment before finally realizing they were taking advantage of him. They got a good year out of him, at least. I suggested he sue.
A decade on, Reddit are scumbags for not addressing this at the business level, and any company using Reddit Requests is cheating customers out of an official, functional Customer Support experience.