Nice to see this still going! we used daggity in a grad school stats class back in 2013. To the instructor's credit, we spent the first few weeks thinking about causal models before we got into any actual stats. (Put differently, a DAG is a nonparametric structural equation model [0], and the rest of the stats class was about different ways to parametrize those models.)

[0] Pearl 2021: https://ftp.cs.ucla.edu/pub/stat_ser/r370.pdf