At the very least he has a very unique perspective on the whole topic, whether you agree with him or not. I also think that it's tough to compare private companies selling their soul to dictatorial governments (he mentioned Russia and China as current examples) for benefits to normal democratic countries like the US, but he certainly has a point.
I don't think his point is meritless. And I do agree that he has a unique perspective, but that perspective isn't one that can be applied to all situations and locations. Russia isn't the United States.
Trump being able to be banned from Twitter doesn't help people in his position in places like Russia, but it does help America. And isn't like Russia needed Twitter to do this in order to give them the courage to continue the abuses they were already doing. They already poisoned Navalny, if they want to shut him up, they'll find a way to justify it.
Twitter is a US based company, and I'm sure that's probably where their focus is. A tweet from the POTUS doesn't hold the same power as literally anyone else on the planet. The POTUS has to be under more scrutiny. The USA is THE world power and a world leader that others look to. So yeah, the POTUS is going to get more attention than random COVID deniers and dictators that aren't accountable to anyone. He's just not in the same situation, imo.
I'm not defending Twitter across the board here, but I think banning Trump was the right move. He had plenty of opportunities to act like a president, provide proof of his claims, and instead he kept pushing his dangerous conspiracy theories. It'd be a bit different had he won this last election, but he's on his way out.
There are conversations that need to be had about the power of big tech, speech, moderating, and who should even be allowed to have an account--but I don't think there are easy answers on most of this.