Odds are PGP still cannot be brute-forced without, literally, hundreds of millions of dollars worth of supercomputers. I DO believe the NSA can brute-force PGP, but only with superhuman super-expensive efforts.
Odds are any messages that were cracked were either decoded by physically capturing the private key, bugging a computer and learning the key that way.
The is some chance that having clear-text messages and their encrypted versions might help crack other encrypted messages.
But I don't find any evidence here that PGP can routinely be cracked.
Hope you're right.