As with many other things, the extremes might be clearer but the interesting parts lay in the huge grey area in between. Sure, we might not need to deliberately memorize syntax, but what about memorizing the different ways of writing loops (for the lack of an better example atm)?

My take is that there is value in putting in deliberate effort to remember the key takeaways from our readings or talks we've listened to (among other things), as the original comment pointed out. The blog post is then on how to go about doing it.