Let me guess...
It was a government sign, NOT a commercially paid sign.
A business would (1) NOT have designed it to be blurry.
(2) Tested it at the vender before delivery/payment!
(3) Made sure it was NOT distracting to drivers.
(4) Been fined BY the government powers-that-be.
Nope. Private enterprise.
Well, theoretically you're correct. However, I used to own a sign company, and I can tell you that it was often very difficult convincing customers who owned commercial enterprises to purchase signs that were actually legible. They routinely specified parameters (colors, letter type, letter size, too many words, etc.) that were just not going to combine into something that could be read, and more to the point, read quickly. Or conversely, they wanted a giant telephone number, with the business name relegated to insignificance. And on and on.
In any case, a surprisingly large part of my job was educationg customers as to just what would have a chance of getting a message across. 'Course, when government bureaucrats were the customers, it was even worse - then the most important thing on the sign was often a long list of names of politicians and others who wanted some sort of public credit.
"A business would (1) NOT have designed it to be blurry."
Dude, it's an "Arts Center". Common sense in design is not what these types are about.