Interesting comment in the Onorite article re LSPI in DI engines: "Automakers have mitigated LSPI by introducing additional fuel at the points where LSPI is likely to occur."
So, if you have a DI engine with fuel dilution issues, there's a good part of the reason why. This implies traditional knock sensors don't detect LSPI, fuel is added based on likliehood of LSPI rather than actual occurrence and running a higher octane fuel would not make a difference. And with ultra-high gearing in some DI/transmission combinations (e.g. CVTs), conditions "...where LSPI is likely to occur." may encompass a pretty wide spectrum of conditions including highway cruising. Highway driving used to be wher fuel dilution was least-likely to occur; this logic may now be upside-down. Matches my experience, anyway...
May be a good time to grab one of the past port-injected new cars and keep it until this stuff has matured.