Honestly I work with SAP and for power users we still implement text UIs for certain special tasks. SAP's language ABAP is actually optimized for this and it works amazingly well. You can implement in 20 minutes a working UI that does a lot.
I’m an ex-Peoplesoft dev and the productivity was pretty mind blowing in that environment. More recently I was involved with a SAP project, and the development estimates for what seemed like trivial things were days and weeks. Your experience and my experience differ. Maybe the developers were just excessively padding?
Yeah, SAP folk are always very conservative. A lot of stuff is actually quite fast, but you need to know an incredible tech stack nowadays going literally back to the 80s to new technology. But if you're in the known, it's fast.