Context: There is a growing belief in the literature that large language models (LLMs), such as those employed by ChatGPT, can mimic human behavior in surveys. Gap: While the literature has shown promising results in social sciences and market research, there is scant evidence of its effectiveness in technical fields like software engineering. Objective: Inspired by previous work, this paper explores ChatGPT’s ability to replicate findings from prior software engineering research. Given the frequent use of surveys in this field, if LLMs can accurately emulate human responses, this technique could address common methodological challenges like recruitment difficulties, representational shortcomings, and respondent fatigue. Method: We prompted ChatGPT to reflect the behavior of a ‘mega-persona’ representing the demographic distribution of interest. We replicated surveys from 2019 to 2023 from leading SE conferences, examining ChatGPT’s proficiency in mimicking responses from diverse demographics. Results: Our findings reveal that ChatGPT can successfully replicate the outcomes of some studies, but in others, the results were not significantly better than a random baseline. Conclusions: This reflection paper discusses the challenges and potential research opportunities in leveraging LLMs for representing humans in software engineering surveys.