When they first came out they had a tendency to miss out bike paths
I chuckled a bit at that. I guess our preferences differ. My biggest complaint with Google Maps bike directions was that they went out of their way to put you on bike paths when a nice short regular road route was available.
If using Google Maps I tend to look at bike directions, regular car directions, and car (avoid highways) directions and then pick one or mix and match.
I have found that the quality of bike paths varies widely. In places they can be very nice, but they can also be indirect and have poor surfaces. In a few bike friendly cities they can be nice and the ones near Breckenridge were pretty nice. That said I more often avoid them than seek them out.