Everyone feeling "safe" is not possible when "safe" means free from any sort of disagreement. Twitter chose a side to make feel safe, the left because that's who they are. And in so doing they made every conservative on Twitter either self-censor to avoid hassles or simply getting disappeared by the twitter gestapo. In other words, not safe at all to express their point of view.
Basically, long story short: Feeling safe = silencing conservatives. That's all it means and it's disgusting. I hope it changes. Glad Elon is making those lefties with a god complex feel unsafe for once.