Saved you a click:

From the HN comments:

Tim from the Copilot coding agent team here. We’ve now disabled these tips in pull requests created by or touched by Copilot, so you won’t see this happen again for future PRs.

We’ve been including product tips in PRs created by Copilot coding agent. The goal was to help developers learn new ways to use the agent in their workflow. But hearing the feedback here, and on reflection, this was the wrong judgement call. We won’t do something like this again.

Gotta love all these PRO TIPS microsoft has been sharing lately.

I’ll believe it when I see a lick of evidence. Been using copilot heavily with a team of 50+ . Nothing even remotely like this has popped up.