Its because strawman is actually the best type of argument to make against communism or socialism. Capitalists aren't comfortable arguing against the core principals of communism so they have to make up things to pin on it. This is how smears work. People put up all sorts of points against the ideology but how often do you see someone actually cite communist or socialist literature, and then make points against it. Most of the people are arguing against the soviet union which no longer exists. Thats another form of strawman. I should call it a deadman.
If you want to avoid strawmanning all the time, I suggest you go to some party platforms and read them. I think most people here have "learned" about socialism from capitalists which is the cause for so many strawmen. Go to primary literature.
Of course its much easier to make an argument against some BS you made up than it is to say "workers don't deserve power"
https://www.cpusa.org/party_info/party-program/We see revolution as a profoundly democratic process, one that involves the actions and decisions of the vast majority. We reject all approaches that welcome and seek violent action.
Reading just two sentences from that page already destroys what most people think about communism.