There’s nothing inherently wrong with being entitled. A worker is entitled to a paycheck; a customer is entitled to the goods they’ve paid for; all of us are entitled to certain inalienable human rights.
So why is “entitled” usually used as an insult?
Bias is real – and often harmful. It’s been shown to manifest in hiring decisions, in the training of machine learning algorithms, and most recently, in language itself. Three computer scientists analyzed the co-occurrence patterns of words in naturally-occurring texts (obtained from Google News), and found that these patterns seem to reflect implicit human biases.