Twitter is put on par with newspapers, because they do gatekeeping and have accepted bias. Twitter can not have the cake and eat it too. There is nothing sinister just the laws kicking in. You wouldn't want google manipulating search results and then claim to be neutral.
It is absolutely naive to think that companies like twitter don't use that power to advance the political/social agendas their most powerful employees care about and it's even more naive to think that governments will see this power and not want to control it for themselves, but instead let it operate unchecked in their own borders, influencing their own elections. They will either block these companies from operating via firewalls or demand that they use their power to share the political and cultural values they want to push, systematically deplatforming any company that they view as a threat to their agenda. China was ahead of the curve.