I was toying around with the suggest a ride feature and at one point when moving the slider I was given the choice of going on half a ferry ride, a little less or more if I slightly moved the slider.
It can be seen here to the south of Setubal.


I'm not opposed to ferry rides being included, but I figured it would make more sense to only include them in the suggestion if the route covers the entire ferry ride. Or maybe not include the ferry ride in the distance total in the calculations? But then maybe you end up with a leisurely ride through Stockholm with a short stopover in Tallinn... 🤷‍♀️