Free speech is only the freedom from the Government restricting what you say
Private entities can shut you down at any time on resources they control
There is an irony in the OP posting in a public forum that we have "forgotten" freedom of speech "in this totalitarian age." Thankfully, we are at least able to say freely that we have no freedom of speech, and openly criticise some unspecified and nebulous authority or elite for this fact — and we equally free to argue against that point of view.
I am grateful to live in a country where I can criticise the government (such as it is) and the opposition (also, such as it is!), and strongly disagree with the established church without fear of the pre-dawn knock on the door. I am also grateful to live in a country where those who support the government, or the opposition, or the church, are free to express their views strongly. I am not always grateful for the tone of the debate, but that's a separate thing!
Schwadevivre's point is a good one. In most western democracies, we have something approximating free speech. In the USA, it is guaranteed by constitution. Anyone can publicly express any opinion or view without fear of legal repercussions or persecution by the authorities. For common sense reasons, there are exceptions such as anything that incites hatred or violence.
The principle has not always been followed perfectly (thinking here of attempts to ban various books in the UK, and the USA's McCarthyite witch hunts of alleged communists) but it's pretty good compared to many countries in the world.
However, anyone who owns and controls a private platform such as a newspaper, internet forum, or private broadcaster is perfectly entitled to choose what to allow, publish, or delete.
I control a Facebook Page for my Morris dance team and if someone on there posted something that was absolutely against what the team stands for, I would delete it. Similarly, I would not expect to get away with posting long rants in favour of atheism in a church forum, or my broadly liberal political views on a hard right Facebook page. (I tried the latter once before I realised the post I was objecting to had been shared by such a page. Ooops!)
The OP on this thread joined the forum yesterday and so far has posted 6 posts, all on a thread that they started. Those posts are somewhat combative in tone and there seems to be a predetermined agenda — although it is unclear whether that is to do with the "end of atheism" as the title suggests, or something to do with psychics being frauds, or something vaguely about 9/11.
I would prefer the OP's posts not to be deleted, and for the OP to engage in the open and good natured arguments that make this forum one of the friendliest places on the internet. People here often disagree, sometimes passionately, but nearly always in a sporting spirit, fencing rather than fighting to the death.
However, if the OP is simply trolling, then no doubt this will become obvious after a few more posts and perhaps then the moderators will step in.
I value this forum as a friendly place for open and intelligent discussion with friends whom I have never met.