Yes, exactly. The point I make in my article is that stupidity isn't at all as common a reason (for why something's been done a certain way) as we'd like to think it is. I think the true split is about 80/20.

This is from someone who's had the [dis]pleasure of working on all manner of steaming piles of rubbish.

If there are any Junior devs reading this, Chesterton's Fence is a great concept to understand and abide by!