Oh so the old version doesn't even work with ADB:
c:\platform-tools>adb devices
- daemon not running; starting now at tcp:5037
- daemon started successfully
List of devices attached
0310412220000487 unauthorized
c:\platform-tools>adb shell am startservice com.google.android.apps.accessibility.voiceaccess/com.google.android.apps.accessibility.voiceaccess.JustSpeakService
Starting service: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.google.android.apps.accessibility.voiceaccess/.JustSpeakService }
Error: Not found; no service started.
c:\platform-tools>adb shell settings put secure enabled_accessibility_services com.google.android.apps.accessibility.voiceaccess/com.google.android.apps.accessibility.voiceaccess.JustSpeakService
c:\platform-tools>adb shell settings put secure accessibility_enabled 1
c:\platform-tools>adb shell pm uninstall -k --user 0 com.lge.voicecommand
Failure [not installed for 0]
c:\platform-tools>