Sorry about that.
Is it possible that you opted in to the experimental betterAIModel mode within the past couple of weeks? As I explained on the blog and on the Settings page this feature was being offered to regular premium users on a temporary basis while I was testing it but that my plan was to put it within a more expensive plan. In the end I’ve now launched the Premium Plus plan for $15 / month or $120 / year. If you want to upgrade you can do it here: Readlang, and if you do, please be sure to check that the “Better AI Model” is checked on the Settings page after upgrading.
If you never activated the betterAIModel experimental feature, then the explanations should be working just as they always have, and certainly haven’t been “dumbed down”.