Yeah, I don’t get much luck using Siri at speed either. I think the wind noise means Siri doesn’t always detect when you’ve stopped speaking properly is part of the issue.Apple CarPlay integration was one of the key reasons I purchased my 2018 GW. It's that important to me.
The onboard nav is limited and convoluted. I can store unlimited destinations on my phone. The motorcycle is limited to 30 (I think it's 30, but it's small).
I can use voice command with Siri, but not the built in nav. "Directions to Hoover Dam," and CarPlay will present me with a map to that destination. I can do this easily while I'm in motion. Not Honda/HK nav.
Entering a destination in the Honda/HK nav has commonly been a PITA for me. When I'm successful entering a destination, Honda nav works well. Using a stored destination works well. If I practiced entering new destinations, the Honda/HK nav would probably be OK but I've not bothered since CarPlay just works.
CarPlay allows me to listen to podcasts, music, radio, audio books and more.
A negative things about CarPlay include its need for cell service to initiate a route, voice recognition when at speed, and heat. Voice recognition is pretty good under 50 mph, and would likely be even better with a better headset. I'm using Sena 20s. It could be better.
I've had my phone overheat in the glove box a number of times (here in Arizona). It's highly irritating, as the phone becomes unresponsive. A number of solutions for the heat have been suggested elsewhere on this board, but I've not tried them. Just opening the lid on the glove box while riding seems to help a lot, tho I shouldn't have to do that.
Regardless, for long rides, I enjoy CarPlay.
Can’t see Apple making big efforts to optimise Siri for motorcycling wind noise though, alas, as we’re not exactly a large proportion of their user base!