Yeah, presumably they mean partnerships like the upcoming TransferWise integration there too.
Here’s how you opt out, once you receive the 1st of these offers.
I’d recommend taking some time to think this through though. If Monzo can see that you’re paying more than you should for your current service, why would you not want to know that?
It’s also worth mentioning that from what I hear, a lot the users who actually received the feed item gave positive feedback. I appreciate the fact that advertising is generally a poor user experience but it might be in your interest to at least wait & see what you think of Monzo’s approach first.