Their fundamental design flaws are completely hidden by their superficial design flaws.
Whenever a Socialist policy fails, the blame falls on some minor (in the greater scheme of things) deviation from the Socialist Golden Path. For example, the National Rural Employment Scheme is a brilliant solution to rural poverty, it will only fail because the bureaucrats have weakened the Employment Guarantee Act. Forcing banks to give farmers in Vidharba low-interest loans in a good idea, the problem is that the interest is not low enough. Five-year-plans are a great idea, its just that our planners sucked. And so on.
Indeed. Always blame the execution—or order one, if it comes to that. That’s the way of socialism.