Just me, but the way I interpret the American flag flying upside down is symbolic of a wrong that needs to be righted.
I don't find it offensive or disrespectful.
Just to be fair I can see where flying the American flag upside down would be entirely inappropriate. At a military base, a govt installation or anywhere the flag is a symbol of the USA. Having to salute an upside down flag is unthinkable.
With that said though a private citizen displaying the message of a wrong that's needs to righted is still OK by me.
