Why? Solving interesting problems to learn is a worthwhile goal. Why should it matter to you that others are "cheating"?

Because competing against other people is the fun part for some people. Why not allow everyone to use stockfish at chess tournaments?

“For _some_ people” is at odds with “_completely_ worthless”, don’t you think?

To be fair, I read it as "_completely_ worthless for _some_ people"

This is stupid though. Advent of Code Leaderbords were always full of cheaters. At least since 2020 when I first started. If you want competitive programming, AoC is not the place for that.

Sarcasm?