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Re:Key Reinstallation Attacks – Breaking WPA2 by Forcing Non... by CityWanderer on Monday October 16, 2017 @06:05AM (#15482083)
Exactly, this particular sentence seems to overly dramatise the situation.

Is this issue any different to using open wifi at a cafe, which many many people do, relying on HTTPS for their security? (This is an honest question)

Re:Key Reinstallation Attacks – Breaking WPA2 by Forcing Non... by ekimekim on Monday October 16, 2017 @06:14AM (#15482132)
At its worst, this attack reduces a protected network to an open wifi, yes.

The risk is that you may do things on a protected network assuming it really is protected - this is more of a thing for organisations rather than consumers, for example organisations might have unprotected services accessible over their office wifi.