Regardless of how the (potentially very impactful) debate about licensing and copyright plays out, I think many here would agree this constitutes an "exploitation" of labor, at least in a mild sense.

Optimistically, Copilot could be a wake up call for thinking more deeply about how the winnings of data-dependent technologies (ultimately, dependent on the labor of people who do things like write open source code) are concentrated--or shared more broadly.

This longer blog post goes into more of a labor framing on the topic: https://www.psagroup.org/blogposts/101

(For the record, I certainly think Copilot could be very good for programmers in general and am not arguing against its existence -- just arguing that this is a high profile case study, useful for thinking about data-dependent tech in general)