All US parking garages have exactly that and it's so weird. Nobody reads them (what, from your car before paying and entering? LOL, nobody even reads the smaller notices attached to the payment machines, nor half the text the displays print during an interaction) so all the work at writing, printing, and posting them is just a kind of weird secular-religion ritual.
Now imagine it's everywhere. Entering a mall? You bet it's long. Entering a post office, bank, government agency? Of course. Entering a barber, restaurant, bar? Yep, even there. Entering a residential building? Yes, the inhabitants actually have a contract about their co-living and how they and others should behave in the common areas.
This translates to ecommerce too - check out the terms of service and privacy policies of some European web shops.
The US does it, too, but it's often separate sheets of printed paper and a few standard-issue laminated posters. Plus a few briefer notices posted to the doors, especially at larger businesses.
It's possible EU states have gotten worse ("worse"—I mean, it's basically harmless, which is why it just fades into the background and it's easy to not even notice it, aside from that the whole thing's a little bit of wasted work) about this since his writing and since I've been there, as the latest of his posts I read were probably from travel in the late '00s, and I haven't been to any part of Europe myself since not long after that.
This has definitely been the case since early 90s all around Eastern Europe. I grew up there. Maybe he didn't notice - these walls of text are close to the entrance but definitely not the most highlighted feature there. I'd guess many locals don't even know - it's just that I like to read random stuff.
I believe you didn't see it, many locals didn't. But I bet you can find it if you go looking. I personally check this stuff, it's my kind of weirdness, and I assure you it's the case in every EU country (I checked) and I'd bet it's the case in every European country.
