This is a straw-man argument. Everybody knows there is an issue with a deluge of spam, obnoxious, content etc. The issue is trust/control. Whom do you trust to have control over who sees what content? A public platform should be beyond reproach in terms of its political bias, which is not the case for Twitter. A way to get closer to that would be to devolve the control over content moderation as close to each user as possible.