no way facebook can be this tone deaf enough for this, just when you thought they couldn't go towards the nadir of desperation to continue to keep ruining their reputation.
do they even care?
Also, who cares about public WiFi these days? Even when travelling it become such a tiny cost it's basically penny pinching (or malicious use). Also - in my experience it tends to be something like 5-10x slower than 4G.
If you work in SV and have SV salary then probably. But for someone living in low-cost low-salary place and travailing to more expensive country for a vocation cost of 4G data can be non-negligible. Also data roaming for many operators is just prohibitive expensive, so first you need to buy a local SIM or some travel-friendly SIM. And during a layover in some 3rd country, public WiFi can be the only option even if you'll use 4G when you'll arrive.
That said I don't earn SV salary, but still paying $5 a day for daily roaming is OK for the utility you get. Of course there's tons of places where same would buy something like 20gb for a whole month so definitely utilise that. Finally if you're in EU then you sort of get it for "free" - it's really included in your plan, but it's still cheap.
All I'm saying it's not like 10 years ago where you'd actively have to look for wifi network to get you basic life together.