Poppy seems to be written as a mean spirited, overworked, angry code monkey rather than y'know a person. I agree she doesn't portray anxiety well, though. Just seems like the nature of her character is written under an almost maniacal lens. She isn't someone you want to root for, as whenever she gains power, she tends to turn her back on others or goes mad with it. She's an example of a character that isn't written or portrayed AT ALL to earn the reception she's supposed to receive.