Objectively, I can see both sides.
Some answers are simply ingrained in us through repetition - which is fine, when you have THAT question.
Sometimes, we need to know the process in order to arrive at the correct answer.
Should they get zero credit for just knowing the answer? Or should they be required to back-show the process used to arrive at that answer? I don't see the point (from the efficiency standpoint) of forcing a process when the answer is correct, but I can understand having to know the process. Back in my day, we "had to know how to do math on paper, in case the adding machine broke". Kinda like having to be proficient with the iron sights, in case the laser doesn't light.
I taught photography back when Photoshop was still a big deal, and digital cameras still cost multiple thousands of dollars. I used film, and a darkroom, and I made all my students use film, and a darkroom, until they "got" the basics of composition, exposure, balance, development, and not wasting frames. Once they got that, I allowed digital work to be done - but you have to have the foundation. When I taught archery, none of my kids were allowed to qualify using a compound bow, or a trigger - you shoot a recurve, with your fingers, in order to qualify. You can play with your compound...but you gotta have the basics first.