But by your logic, it would mean that being elected gives you immunity of doing whatever you want and nobody cannot do anything against that without being accused of "marginalizing". That's a "free out of jail" card that does not make any sense in democracy. In democracy, contrary to dictatorship, elected people don't have special privileges: they are judged and treated the same way other citizen are, especially if avoiding the problem would not have stopped them expressing what they wanted to express.
The reason several people were removed is because they have made really poor choices. For example, Trump could have defended his thesis while still calling for people to not take violent action. It is incorrect to pretend that the bans are stopping politicians of doing politics: you can defend your party or explain your political ideology without breaking twitter's rules. It is incorrect to pretend that the bans are targeting a political side: if you are promoting a political ideology that is not based on hatred and lies, then you never _need_ to post anything inciting to violence or spread misinformation.
If now you are saying that Republicans are more often banned, maybe one reason is that Republicans are more prone to accept hatred or lies as part of their political ideology strategy. But being banned is a strategy consequence, it's the price you pay if you go down this road that is, again, totally a choice (as long as your political ideology is not based on hatred and lies).
