I certainly agree. I'm well into my 70's but recall how difficult it was/is to learn a foreign language and memorize most anything. It continues to be a challenge to remember names and faces let alone lyrics to songs, etc. I've had a successful career as an IT management consultant and attribute this and my ability to recall so many things or somehow, using objective means, develop solutions to a variety of problems that one would think you need to visualize first. My guess is that I think in terms of process steps which do not require visualization. So, back to your comment about adopting different teaching techniques for those of us with aphantasia, perhaps rather than requiring memorization of the periodic table or historical events etc. through visualization or other standard techniques, schools could teach us memorization through ‘Semantic memory’ which refers to a major division of long-term memory that includes knowledge of facts, events, ideas, and concepts. I've not tried it but it seems like an approach that would be more in sync with my default alternative approach.
Welcome to the club. My good buddy with hyper phantasia and I, for years, have compared our visualization capabilities (he always 'sees' vivid, animated or whatever pictures in his mind) and I see none. Many friends/articles talk about remembering names by visualizing something about them... not going to happen with me. But, otherwise it is interesting how I can pseudo visualize i.e., no pictures but somehow just know to take a step by step approach to tasks that others say they visualize first.