You state that there’s no evidence for the fundamental principles behind Anki. (Hmm, why use it then?)
But there does appear to be some longstanding research, starting way back in the 1880s, including Piotr Wozniak’s work, all the way up to L.M.Sherlock’s recent research, published in ACM conference proceedings, that led to the development of FSRS, assisted by a dataset of 1.5 billion reviews by 20k Anki users. So it does seem that this is evidence based.
Meanwhile you make your own claims (“It’s very evident from the research”, “If you’re familiar with the research supporting the above”) without naming or describing that research. Most of us aren’t familiar with it, so that would be a helpful topic for your next post in this thread.
You say you don’t want to argue memory science, and fair enough, but I think you need a little more background exposition.