This is not true at all ...

Let's say stock is $100. You have two choices

1: Buy 100 shares at $100, cost is $10000

2: Buy 1 contract of deep ITM leap with strike price of 50, the price would be 53-54, so the cost is $5300-$5400

You will gain almost the same profit as stock if stock rises

You will lose max of 5300-5400 if stock crashes. But if you buy stock, you could lose more than that (for example, if stock drop to 30)