Over the past one and a half years, Stack Overflow has lost around 50% of its traffic. This decline is similarly reflected in site usage, with approximately a 50% decrease in the number of questions and answers, as well as the number of votes these posts receive. The charts below show the usage represented by a moving average of days. The data is from https://stackoverflow.com/site-analytics Traffic Votes Posts
Doubtful, considering ChatGPT has only been public since late last year, and Bard’s even newer. I also really hope those aren’t a large factor, since most coding examples I’ve seen from ChatGPT only deal with questions of a really rudimentary nature and have given useless or wrong information about anything more nuanced or complicated.