In today's youtube posting I discussed the permanent ban of Mr. Trump from twitter and its implications.
I fear that there is a danger that the platforms would split into physically defined echo chambers. Up to now, echo chambers did exist, but they were subsets on a single platform, such as twitter.
When people split into twitter and parler, for example, there would be an increased danger of more absolute segregation of people and opinions.
Youtube: Twitter vs Parler: Danger of platform-defined echo chambers