My wife and I watched his 3 hour interview last night after hearing about these bans and discussed this a fair bit.
For those that didn't watch, he categorically denies the existence of Covid-19, calls the entire thing a hoax and said that Gates is a psychopath who wants to vaccinate the entire world with nanobots that will eventually enslave us. 5G doesn't cause Covid-19, because it doesn't exist, but 5g can activate the nanobots and at 60ghz can cause respiratory problems similar to what we're seeing. This is orchestrated by a shadowy group called The Cult. We should rise up against our governments and the 'technocrats' of silicon valley (the 1%) to solve this.
It may sound ridiculous, but he mixes in enough truth (often in the form of things you will have seen on the Internet) and cleverly spun arguments to make the 'lies' believable. He does this over a long enough time period (yesterday 3 hours, but his talks are often far longer), that you come away believing what he's said, that's he incredibly clever, and that he's fighting for the "real man on the street" against the 1% and a government that's done nothing for you. Social media has been very dangerous in this respect.
A few days ago I saw someone on twitter saying that rather than deplatform, Icke should just be beaten in debate. The problem is you can't beat Icke in debate without making his followers dig in further. Like any conspiracist, the retort is "that's what they'd want you to say". It's similar to arguing with someone about the existence of God. You can't prove there is no God, I continue to believe and tell you he exists.
My wife just thinks it's all ridiculous. I think with the vaccinations, it's dangerous. But then I have kids now, both are vaccinated. The concept of censoring people scares me, but the idea of throwing away a hundred years of science and medicine because people are worried about being being controlled by Gates's nanobots scares me even more.