Just to confirm, the posts stats on the /about page don’t currently differentiate between PM and regular topic posts (as well as small action posts, etc) and are all grouped as one big number.
I think it would make sense to make these more specific as I think it would make them more meaningful (though I’m not sure how many people view the /about stats overall for each site).
Another one that’s been mentioned before is excluding staged users from the User stats.
When we do data explorer queries on similar metrics (and can be more specific in what we’re pulling out) it often raises a question as to why they don’t match the expectations from the /about page. Personally, I think having them be consistent would be a good thing. 