Steemit - Should people have rights to downvote to disable/ delete comment from the Blog?

I have given opinion on cryptocurrency predictions to people who were using out dated techniques to predict. All the data points and logics were shared with the intention that we use the right technique to help and guide people . However, those people did not understood that intention and misused downvote privileges to disable/ delete the comment. He has downvoted all my comments including my introduction note. This is sad !!!