In this case, the people running it were doing spectacularly stupid things. Basically they destroyed every part of their economy except for oil, then the price of oil fell. That is really, really bad planning. That doesn't mean that their form of government is bad however. I'm not defending their government system as I believe that it uses too much socialism, but your argument is also pretty lackluster.
I would say too much socialism is bad. But so is too little socialism. There are definite places where government ownership is the best. For example, I really hope that no one here wants the US to go to capitalism for the US army. (Lots of independently controlled small armies is not doing so well for the middle east!) Or for a more mundane example, is it really a good idea to have dozens of water treatment plants built for each town for true capitalistic competition (at a cost of hundreds of thousands of dollars per resident, or more)? Like fskimospy said, the true debate should be how much socialism is right and where to apply it.
Anyone trying to turn this into an all or nothing debate is way oversimplifying things and leads to disastrous all or nothing conclusions.