"I think it is rather foolish for someone to imply that all types of communism advocate this type of government
Quite the contrary, communism is all about proletarian revolutions, power to the people and elections -- yes, elections. Dictators are getting elected. They are not really democratic elections, everything being directed with fake votes from a privileged minority, mechanical smiles and applauses and all that, but they are elections nonetheless.
However, you should go and learn some systems theory -- just because a trait of a system is not advocated, it doesn't mean that it isn't going to happen, regardless of any precautions you might take. Communism itself is really natural for dictatorships. And it is not only about its predilection for dictatorships; but it contains many flaws as an economic system too, like for example the notion that profits are only generated through surplus labor; not to mention that the working class is becoming more and more obsolete.
Its most important flaw however is that it fails to take into account human nature. People do not want to be equal, they do not want to share property and in general have a strong sense of ownership, not to mention selfishness. What happened instead is that in communist countries the higher you ended up in the political party, the more privileges you had, with corruption going rampant. Hence the phrase: in communism, some people are more equal than others.
Karl Marx used to say that capitalism leads to economic crisis, making them inevitable due to internal flaws. However, communism does not solve that. I lived in an European communist country - when the country had to pay its huge external debts, the austerity measures taken in the 80-ties (that lasted for 10 years) would make today's Greece look heaven-like.
And make no mistake about it, China is communism with a twist, but their biggest source of income are external investors that come to them because of driving forces of capitalism. It also remains to be seen how China will evolve, but evolve they must, trust me