[handoflixue]

> Before LLMs you could have had participants using Stack Overflow to cheat.

"could have", yes, but mostly didn't until LLMs showed up.

The problem is that LLMs lower the bar to cheating: using Stack Overflow still requires a pretty solid knowledge of the domain (and in a professional coding context, usually wouldn't even count as cheating). The LLMs also let you do this much faster.