Edit: Just to point out this is not necessarily a criticism or some snide remark. I am pretty sure that back in the day I would have looked at similar Wikipedia stats and gone "whoa there are people who basically have a full time job trying to organise an online encyclopaedia." Then I would have assumed I could code it in a weekend. The point I think is not "these must be low effort submissions" but "HN has a more diverse ecosystem than a rando like me posting every so often"
In short - who knows what the forums of the future will look like or be? HN does not look like the forums from ages back - it maybe something new.