Honestly I really struggle to see why this would even be 'democratic'. There's a pretty strong and convincing argument that it would be better if Twitter hadn't blocked Trump, but the notion that the government should be allowed to force at gunpoint a private entity to amplify speech that such entity disagrees with doesn't strike me as particularly democratic.
I get it, Twitter bad, I agree. But the implications of this idea are frankly much scarier than any "corporate decision" will ever be.