I did just have a quick chat with Lutron QS(x) support and they said that they have not heard about anything like this, so hopefully there's nothing to the hearsay!...
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But yes, JohnMax, Lutron has had a long history of IP-related 'bone-headia'. they really need to get that working.
My latest was servicing a QS system and they told me that they HIGHLY recommended not using Wifi to connect to and manage processors!!!