To be fair, it does work sometimes. Just flew a 45min flight Ottowa to Montreal in the Beechcraft Baron. Used the planner with all boxes (approach etc) filled. It followed the plan perfectly, finishing on an automatic ILS landing, first time I’d attempted it.
I’ve had my share of problems, in particular with the ATC, but occasionally I get a result like this. Hopefully, over time, the good results will begin to outnumber the bad.