One thing to keep in mind is that I've had the blog for about three years; I didn't add all the bells and whistles right out of the gate. The validation checks

One thing to keep in mind is that I've had the blog for about three years; I didn't add all the bells and whistles right out of the gate. The validation checks and build features have grown over time as I've discovered errors or pain points from doing things manually (e.g. breaking the site on mobile, breaking links without realizing it).