That's been the work around for years. Also closing out all apps even if they aren't music related. That means Pandora, Facebook, YouTube, Spotify, Safari, ITunes, Apple Music, Tidal... Honda likes to try and open whatever you had used no matter what you have the source set to last. For some owners that meant XXX video sound from a video would resume play across the radio when the phone paired.I’m no software engineer but I believe the issue is a new incompatibility between the “Gracenote” program and iOS 11.0.2.
Maybe Apple will fix in a future release (not holding breath).
Workaround seems to work fine. When iPhone/iTunes goes into the endless “Indexing” loop, power off MyLink radio, close iTunes, power up radio, restart iTunes.