ArcMap isn't going to be retired until 2026. I understand Esri wants everyone to switch over to Pro immediately. But that's not realistic, nor is it going to happen.
Esri should still provide online courses for ArcMap until the product is retired. It's not fair to long-time customers to not have access to those trainings for our users who are still using ArcMap.
It does feel like a slight burn to only have trainings available in ArcGIS Pro, and not ArcMap.