Why I rooted my "tablet" and fixed it, no more bugs, didn't care about the Honda warranty on it. If I break it, or it breaks, now I can fix it and not deal with the "dealers."
As a note, turning on the "Memory Refresh" feature on you Infotainment system can help keep these little annoyances from cropping up (though not always) as it performs a soft reboot when you set it to, normally overnight. This should be on by default but I have heard of some people turning it off thinking it causes loss of Bluetooth features (rumor from somewhere).
Cheers and yes, your "dealership" was unethical in that response as they are very aware of "rebooting" cars. They often do what every "tech support" call center asks if you have done... "did you try restarting your computer/router/modem/printer/etc... yet?" Dealers will disconnect the 12v batteries, count to 10, reconnect them and see if that "fixed" the problem. Some will even "short" the positive and negative power cables if "step 1" didn't work. Do not let them ever do that with your Clarity, may be fine for regular cars but not this PHEV (personal experience). If they don't know about the "reboot" option on your infotainment display I am a little surprised based on the above statement, but I would bet that is what they would have done, then billed Honda for the warranty labor. As a Clarity owner - we seem to always be in search of "clarity educated" dealers. In fact, it should be a forum sticky by State where we can report dealers that actually know what they are doing....
Cheers,
Cash