US tech workers are automating themselves: The technology sector now reflects ~2.3% of total US employment, the lowest since early 2021. This percentage peaked around the ChatGPT launch in November 2022 and has fallen over the last 3 years. Over this period, employment in Computing Infrastructure, Data Processing, Web Hosting, Web Search, and Computer Systems Design Services has shed -91,000 jobs. This reverses a 20-year uptrend in tech employment. Meanwhile, software development job…