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From the article:

Sang has no illusions that even a clever cryptographic font—which you can use in email messages to shield them from snoops and font-recognition bots—will remain encoded for long. They're not meant to be long-term tools with which to combat the NSA. Rather, he views them as an awareness-raising measure.

"This project will not fully solve the problems we are facing now," he writes, " but hopefully will raise some peculiar questions."

Not only will the font not fully solve the problems everyone is facing but it will not solve anything!

I was wondering if the font was more an artistic statement rather than an actual solution.

TFA is helpful in addressing your inquiry:

"This project will not fully solve the problems we are facing now," he writes, " but hopefully will raise some peculiar questions."