That’s not basic, that’s misguided.
Given the other possible problems above, it would not achieve much and thus be nowhere near the top of the list. Surely the silly apps are a much bigger vector than some open WiFi. So as long as you still insist on using them, it’s a lost cause.
WiFi clients also already broadcast requests for SSIDs they have config for to make scanning more responsive. You’d need to nuke that too.
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