Many threads on this, but you are correct the system is not helpful if you aim to develop good chess habits. There are better alternatives though...
TT Scoring system

Well Chess Tempo for one, what I use, but there are other trainers like CT Art or Chessimo, anything but Tactics Trainer.

Anyone else getting p**ssed off with the scoring system ... I'm constantly getting 2 and 3 points for a succesful solution but 8 or 9 taken off for failure ... and no points awarded if I get the puzzle right because I have run out of time. I hover around the 1480 mark but a run of three losses and I start to plummet. Very frustrating.

Agree, TT scoring system is discouraging and only measures blitz skill. I use TTs that are elsewhere.

u can use chess tempo t.t for free...U just need to make a free account... And u can do as many tactics as you want...

Broke 1500 ... whooopeee ... but now am scared to play on in case I hit the big slide ... shouldn't be this way ... I should know that if I take too long but still get it right I will at the very worst NOT lose points.
Anyone else getting p**ssed off with the scoring system ... I'm constantly getting 2 and 3 points for a succesful solution but 8 or 9 taken off for failure ... and no points awarded if I get the puzzle right because I have run out of time. I hover around the 1480 mark but a run of three losses and I start to plummet. Very frustrating.