I just don't think anyone has to be on Twitter to learn about (for instance) bad legislation that affects marginalized people so they can oppose it. It tends to bubble up into other media sources. And nowadays, those media sources will cite the big influential tweets anyway, so it's not even like you can escape from Twitter.
It seems like you're reading the original comment as saying "I feel justified in never thinking about marginalized people and systematically preventing myself from seeing anything that might prompt that thinking"... and I think that's a really big leap to make. There are ways to be informed without exposing yourself to the firehose of everyone's random opinions and feelings, which can be a complete lose-lose proposition, damaging your own mental health and relationships without helping anyone.
It seems like you're reading the original comment as saying "I feel justified in never thinking about marginalized people and systematically preventing myself from seeing anything that might prompt that thinking"... and I think that's a really big leap to make. There are ways to be informed without exposing yourself to the firehose of everyone's random opinions and feelings, which can be a complete lose-lose proposition, damaging your own mental health and relationships without helping anyone.