well it's definitely a deficiency. I can't be bothered to check which one, it's either potassium, phosphorous or iron but that is not really that important. What is important is why it is happening and the most likely reason is a wrong ph in the soil/watering solution.
Amazon sell decent ph testing meters for under a tenner.
You are right that it will be harder to get a deficient cutting to root successfully but I wouldn't throw out a plant because it was grown in bad conditions. Could be the best strain in the world, could be crap but you have given too little info as to why you are asking for help but also saying you will be chopping her up into tiny pieces soon.