For people interested in fat loss, the relevant benefit of strength training is that it provides a signal to your body to hold on to as much muscle as possible. (Usually in conjunction with eating sufficient amounts of protein during your fat loss phase.)
Without strength training, you're as likely to lose muscle as you are to lose fat. (E.g., lose a pound per week on the scale and 50% may be fat tissue and 50% may be muscle tissue.)
With strength training, the ratio skews towards losing mostly or even entirely fat without losing muscle while having the same rate of weight loss all things being equal. (E.g., lose a pound per week on the scale and 90% may be fat tissue and 10% may be muscle, or 100% fat and 0% muscle.)
For people sufficiently new to strength training or for people who are sufficiently overfat, it's even possible to build new muscle tissue while losing fat, though this gets less and less likely the more advanced you get and the leaner you get. (E.g., lose a pound per week on the scale and 1.25 lbs of fat might be lost while 0.25 pounds of muscle might be gained.)
Without strength training, you're as likely to lose muscle as you are to lose fat. (E.g., lose a pound per week on the scale and 50% may be fat tissue and 50% may be muscle tissue.)
With strength training, the ratio skews towards losing mostly or even entirely fat without losing muscle while having the same rate of weight loss all things being equal. (E.g., lose a pound per week on the scale and 90% may be fat tissue and 10% may be muscle, or 100% fat and 0% muscle.)
For people sufficiently new to strength training or for people who are sufficiently overfat, it's even possible to build new muscle tissue while losing fat, though this gets less and less likely the more advanced you get and the leaner you get. (E.g., lose a pound per week on the scale and 1.25 lbs of fat might be lost while 0.25 pounds of muscle might be gained.)