While everything you say here is worth considering, it's important to note that Polly is someone who has been on the internet since she was at least a young teenager. She's someone you could describe as 'chronically online', and if her conservative household and private education prevented her from being more open-minded, then at the very least the very prominent BLM movement in 2020 (which for the most part took place on social media due to the pandemic) should have made her sit with herself and consider her own views. Over ten years have passed since the earliest tweets she posted, and not once did Polly - someone whose whole brand and personality is based on 'being online' - think to look back at her previous views and remove them. Her tweets and the views they represent may be a reflection of who she was a decade ago, but her lack of action and self-reflection shows who she is now.