Sure you could say "just don't go to those places" but then you're slowly withdrawing from society as these things gain in ubiquity.
Examples from several different countries: getting around without rideshare/taxi hailing apps, 'self check-in' gyms in Seoul, Covid-related QR codes to get into restaurants, stores that only take mobile payments.
conversely the only reason that these companies enforce such policies is because they get away with doing so and people participate.
Not only, you are also casting a vote:
"I am very sorry, but I usually don't have my phone with me, seems like I need to bring my money to another business."
I do say that, that all sounds crap and I don't want any of it even though I have a phone. (And it isn't my experience, I believe it exists but it's absolutely not hard to ignore.)
Again, if they all-caps-hate it so much...