1. The second - and third, for that matter - most voted for President is Obama (69.5 and 65.9M votes). Trump is the fourth (62.9M votes)[1].
2. He was not banned because he wasn’t ‘their brand of politics’, he was banned for inciting violence against the terms of those platforms. You can certainly argue Twitter and Facebook had - and have - a very inconsistent enforcement approach for those policies. But that’s not what you are saying.
[1]: https://en.wikipedia.org/wiki/List_of_United_States_presiden...