Sure, but we can’t ask all Anki users, so if that’s how much evidence you want, there is nobody on this planet, not even Dae, who could show you that much.
who can just turn up their DR for themselves and be done with it.
A lot of users also don’t understand the relationship between DR and interval lengths, and think that long intervals are an inherent part of FSRS. Which is why I’m really hoping for this: Desired Retention UI Overhaul - #33 by Expertium
I think you are vastly underestimating three things:
- How many users don’t like long intervals
- How many users think that long intervals are inherent to FSRS
- How many users deliberately choose not to use FSRS because of 1 and 2