#twittermigration should also be seen as a fascist trashing publicly-used service to disrupt spaces and communities for marginalised people, forcibly dispersing them amongst the internet.
Unfortunately some people will be much more affected by leaving Twitter than others - imagine a closeted LGBTQ person trying to find their online friends across a dozen alternative platforms? We need to move towards viewing the internet as a public utility, and encompass it into wider left wing talking points.