Yes it was 
Firstly - you haven’t mentioned this but it’s worth covering off now for anyone else who gets involved in the conversation - let’s assume that this feature (which is likely to be developed) will be opt in or you’ll at least be able to opt out.
There’s no point in complaining about not wanting to be sent annoying notifications / recommendations until we know that Monzo is planning to take that approach & I’d be very surprised if they make this feature annoying or intrusive.
Now that that’s out the way…here’s a couple of ‘insights’ that I’ve thought of (from posts which have received an ever illusive ‘like’ from Hugo so I might be on the right track)…
The point is Monzo will end up being able to create a pretty detailed profile of you based on your age, location, what you buy, where (location & merchant), how much you spend per purchase on average, how much you spend per month on average etc. so they should be able to find people who are similar to you, to compare your purchases with.
As you probably know, most social media sites do this already (Facebook, Twitter, Instagram etc.) but rather than finding the content that you’re most likely to be interested in, Monzo will be spotting ways that you can save money which sounds pretty good to me 
This feature isn’t even on the roadmap yet so I wouldn’t worry about it’s development getting in the way of other improvements 