Lost points for accepting a draw

So I was playing someone and I was winning. They proposed a draw, I accepted and the app awarded them points and I was penalized. This seems silly and unfair because in my opinion it is courtesy that if someone no longer wants to play than to allow a draw. No one should have been penalized
[Event "Rated Classical game"]
[Site ""]
[Date "2019.11.26"]
[Round "-"]
[White "MacTaylor"]
[Black "H3_Zulu"]
[Result "1/2-1/2"]
[UTCDate "2019.11.26"]
[UTCTime "06:07:36"]
[WhiteElo "1216"]
[BlackElo "1052"]
[WhiteRatingDiff "-15"]
[BlackRatingDiff "+6"]
[Variant "Standard"]
[TimeControl "900+15"]
[ECO "C27"]
[Opening "Vienna Game"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. e4 { [%clk 0:15:00] } e5 { [%clk 0:15:00] } 2. Nc3 { [%clk 0:15:11] } { C27 Vienna Game } c6 { [%clk 0:15:00] } 3. Be2 { [%clk 0:15:02] } Bb4 { [%clk 0:15:11] } 4. Na4 { [%clk 0:14:40] } d5 { [%clk 0:15:02] } 5. c3 { [%clk 0:14:29] } Ba5 { [%clk 0:15:06] } 6. b4 { [%clk 0:14:41] } Bb6 { [%clk 0:15:18] } 7. Nxb6 { [%clk 0:14:53] } Qxb6 { [%clk 0:15:31] } 8. Nf3 { [%clk 0:15:00] } Nd7 { [%clk 0:15:23] } 9. O-O { [%clk 0:15:10] } Ne7 { [%clk 0:15:34] } 10. a4 { [%clk 0:15:21] } O-O { [%clk 0:15:43] } 11. a5 { [%clk 0:15:35] } Qd8 { [%clk 0:15:40] } 12. Bb2 { [%clk 0:15:16] } b5 { [%clk 0:15:43] } 13. axb6 { [%clk 0:15:27] } Nxb6 { [%clk 0:15:57] } 14. Nxe5 { [%clk 0:15:09] } dxe4 { [%clk 0:16:04] } 15. Bh5 { [%clk 0:15:12] } Qd5 { [%clk 0:16:06] } 16. Bxf7+ { [%clk 0:15:09] } Rxf7 { [%clk 0:16:17] } 17. Nxf7 { [%clk 0:15:23] } Qxf7 { [%clk 0:16:31] } 18. Ra5 { [%clk 0:14:40] } { The game is a draw. } 1/2-1/2

Your proposal honors you but it would blow up the whole rating system.

You're winning? 2N vs R+P is pretty even, especially with black probably playing Nc4 followed by Nd5 with a decent postion.
EDIT: Stockfish gives it as -3.7, you're not winning

You drew against a lower rating opponent. You lose points. Common sense. Ratings are just numbers, they don't care about your feelings.

The higher rated player is by definition expected to win, if you don´t win you lose rating points.