As great as Waze and Google Maps are for dynamic routing and responsive path-finding, I am using rental scooters now, and at this point I really need to design some bicycle routes with intention and purpose, and Maps simply refuses to save any "dragged" or "pinned" route in any meaningful way, and I suppose this is deliberate, because A.I. knows best, kids!
Anything other than cars I believe google maps/waze is nearly unuseable for navigation, yah. I think they even removed "bike" pathing too. Public transport is pretty alright, but very inaccurate vs local app when they use the same data and routing is lacking intelligence sometimes.
Even for driving the major apps are crappy about routes. I was on Foothills Parkway a while ago and wanted to keep Apple Maps running just as a "miles/time remaining" indicator. It can't do anything other than fastest route, with the option to ignore highways.
So unless you set a waypoint halfway between every single entry/exit, it will want to get off the parkway and take US 321 instead.
You can manually set up the route using a bunch of waypoints, but then it tells you the distance/time to next stop (which are arbitrary map points) instead of the distance to the end of the parkway, and you can't save the route so you'd better not touch it or want to look at anything else on the map once you have it set up.