I'm in slightly overlapping social circles with Liz and have never felt remotely insulted the times we've chatted. I don't follow her on Twitter anymore and haven't been around her since the pandemic started, but I'd be shocked if she insulted people indiscriminately.
For all I know she might insult people when she sees them say things she thinks are shitty, but I haven't experienced that and I think we've disagreed on things in the past.