Not every city has a central square, not everything you want to see might be within reach of one, not all restaurants are there, and of course all restaurants there can be tourist traps.
I don't need to think about how people struggled with things that are easy to today besides for the fun/novelty of it. While we're at it, exchanging money, carrying around and paying in cash suck. It was slightly less bad because i could look up the locations of ATMs of banks that don't charge you an extra fee for being a tourist on the spot.
> If the food turns out to be bad because you did not read online reviews, so what? Is your trip spoiled or did you just make a memory about shitty food in a Sri Lankan square
Considering how bad "bad" can get, that memory can involve a trip to the hospital ( food poisoning, parasites, etc.).
I’m sure you’ll post a reply that explains some outlier reason for a smartphone: what if I’m in rural Bangladesh and there’s no central square? What if….
But think how people got through these difficulties before smartphones. A lot more experimentation and reaching out to locals. This is why portable language phrase books used to be so popular when traveling.