When we had started doing the regular practice game jams, there were some folks who were also specifically interested in doing something similar for TTRPGs and specifically. Basically I thought it would be something that could be fun and of value for those who might want to try a new genre of game development. I know I'd have to do a lot of learning on the subject myself, but I'm ok with that as it's also helping other people who might not otherwise find other jams/opportunities like this.
As a CRPG/JRPG/WRPG fan myself, I think it's also cool to explore another branch of RPG development as well.