Hand drawing of automation is still unpredictable. Looks like somewhere underneath there are two kinds of segments - stepped/flat and linear, but there is no way to change the type from the gui. It could be some old code from Cubase in 90s, as I remember similar behavior. Also there is no way to add just one point using apple pencil - it always draws bunch of it.
The video is in this topic (first comment) https://www.facebook.com/groups/Ipadmusician/permalink/3449483375106252/