Why is censorship allowed on the internet but selectively?

I had a response for a person whose car was past the point of repair and likened it with a bic lighter as a form of literary allusion. then i was censored but it was not dirty, offensive, lewd or mean.

Then they took points off my score because their decision was to stop discussing something they could not understand.

They deleted it all. So is that not censorship without explaination and then following it up with penalties, and then threatening to take more, but not saying why they objected?

There was some speculation i saw in the responses that they simply thought it was some kind of spam or mistake. so why take points away. its a literary allusion. beauty is in the eye of the beholder is it not? what do you guys think, do they have the right to tell me what i am thinking and then keep it a secret?

Then operate a forum of this type honestly?

Jesus once said it's not what goes into a man , it's what comes out of him